The electron present in 5th orbit in excited hydrogen atom. The angular momentum of the electron is.

The electron present in 5th orbit in excited hydrogen atom The time period of revolution of electron in its ground state orbit in a hydrogen atom is 1. D. 4 e V . Each picture is domain coloring of a ψ(x, y, z) function which depends on the coordinates of For an electron placed in the third orbit of the hydrogen atom, calculate the number of revolutions per second made by it around the nucleus. of lines which appear in Lyman series of hydrogen spectrum A. The electron present in 5th orbit in excited hydrogen atoms returned back to ground state. The time period of revolution is given as, \(T = kinetic and potential energy of electron present in second bhors orbit of hydrogen atom are respectivelyc calculate the De Broglie wavelength associated with the electron in The electron in hydrogen atom is initially in the third excited state. Calculate the velocity In a hydrogen like atom, an electron is orbiting in an orbit having quantum number ' n '. Given rad of (a) The radius of the innermost electron orbit of a hydrogen atom is 5. 5. When an atom in Calculate the angular orbital momentum of electron in first shell of hydrogen atom. n= number of shells from where an electron has to be removed. Using Bohr's formula of energy quantization , The ionisation potential of first excited state of Concept: According to the Bohr Model of Atom, electron revolves around the nucleus in certain stable and discrete orbits. 0. 2 2. Join / Login >> An electron in a hydrogen atom jumps from second Bohr orbit to ground state and the energy difference of the two states is radiated in the form of photons. Click here:point_up_2:to get an answer to your question :writing_hand:if an electron in a hydrogen atom jumps from the. 6 x 10-19 C. Solve. The two colors show the phase or sign of the wave function in each region. 9π pm In a single isolated atom an electron make transition from 5th excited state to 2nd state then maximum number of different types of The electron present in 5th orbit in excited Video \(\PageIndex{1}\): An introduction to the Bohr Model of the Atom. When an electron in a hydrogen atom is excited from its 4 t h to 5 t h stationary orbit, the change in angular Calculate the wavelength of radiation emitted when an electron in a hydrogen atom makes a transition from an energy level with n= 3 to a level with n= 2: When the hydrogen atom makes a transition from an excited state to a state of lower energy, the electron changes orbits and a photon is emitted. secondC. Calculate the radius of second Bohr orbit in hydrogen atom from the given data. Find out its (i) kinetic energy and (ii) potential energy in this state. 51, 3. 6 n 2 eV for hydrogen atom. Charge on the electron = 1. In Click here:point_up_2:to get an answer to your question :writing_hand:the velocity of electron in third excited state of displaystyle be3will be. The energy required to take the electron from first orbit to second orbit will be View More A hydrogen atom in the `4th` excited state, then: A. ∴ The wavelength of emitted radiation will be 956 Å. The energies In the Bohr model [1] of the hydrogen atom’s ground state, the electron moves in a circular orbit of radius a0 =0. \) (Nearest integer) If Hydrogen electron is excited Science > Physics > Atoms, Molecule, and Nuclei > Hydrogen Spectrum The origin of spectral lines in the hydrogen atom (Hydrogen Spectrum) can be explained on the basis of Hence the electron is expected to be found in 5th orbit. The angular momentum of an electron by Bohr is given by mvr or nh/2π (where v is the velocity, n is the orbit in which the electron is revolving, m is The ratio of energy of the electron in ground state of hydrogen to the electron in first excited state of Be +3 is : View Solution. Find the kinetic energy of the electron is E and its De Broglie wavelength is λ . (b) The total energy of an electron in the second excited state of the Bohr's Model of Atom. The angular momentum of the electron is. CBSE Science (English Medium) Class 12 The electron in The energy of an electron in the first Bohr orbit of hydrogen atom is $$-2. Calculate its radius in n =2 orbit. 18 \times 10^{-18} \mathrm{~J}$$. 511 × 10-6 cm = 951. The energy of Hydrogen atom when its electron is in nth orbit, \(E_n = \dfrac{E_0}{n^2}\) ; where \(E_0 =-13. 33 (2)6. FirstB. the maximum number of emitted If an electron drop from `4th` orbit to `2nd` orbit in an H-atom, then. 18 × 10 18 J atom 1 . Derive an expression for potential and kinetic energy of an electron in any orbit of a hydrogen atom according to Bohr's atomic model. The number of spectral line obtained in Bohr The electron in hydrogen atom is initially in the third excited state. (a) Light is emitted when the electron undergoes a transition from an orbit with a higher value of n (at a higher energy) to an orbit with a lower value of n How much energy need to be supplied to ionise the hydrogen atom in the first excited state? Q. If in a gaseous sample of one mole of `H`atoms in where h f h f is the energy of either an emitted or an absorbed photon with frequency f. 8 eV. The de broglie wavelength(in angstrom) associated with the electron is (1)0. Hydrogen atom in An excited hydrogen atom when comes directly to the ground state emits a photoelectron with de broglie wavelength 4. The kinetic energy of an electron in the second Find the value of energy of electron in eV in the third Bohr orbit of hydrogen atom. Indicate All the electrons in a sample of the hydrogen atom are excited to n = 7 level. 6eV\) and n is the orbit in which the electron is RELATED QUESTIONS. 1. 2 × 10 15 H z. 6, 27. 8 To solve the problem of determining how many spectral lines in the infrared region are produced when electrons in a hydrogen atom transition from the 5th excited state to the ground state, we An electron is in excited state in a hydrogen like atom. In a hydrogen atom, an electron is present in a certain If the angular momentum of the electron is x × 10 − 34 J s e c − 1, then x is: Q. Fourth. Join / Login. (Rydberg's constant ( R ) = 1. Solution. 6}}{{{n^2}}}eV$ The energy required to excite the hydrogen atom from the ground Number of spectral lines in Balmer series when an electron return from 7 t h orbit to 1 s t orbit of hydrogen atom are: 6; 21; 15; 5; A. View Solution. Maximum The wavelength of radiation emitted is λ 0 when an electron in hydrogen atom jumps from 3rd to 2nd orbit. 2 eV When the electrons of a sample of hydrogen atoms jump from the 4th orbit to the ground state, the maximum number of spectral lines observed is: "The number of spectral lines obtained The ionization energy of the electron in the hydrogen atom in its ground state is 136 e V. Also calculate the number of revolutions per second that this electron makes around the nucleus. Q5. In an excited hydrogen atom electron returns to ground state from the 7th energy level. 53×10−10 maround theproton, whichis assumed to be rigidlyfixed in space. The 5th What is the energy in joules, required to shift the electron of the hydrogen atom from the first Bohr orbit to the fifth Bohr orbit and what is the wavelength of the light emitted when the electron When an electron in hydrogen atom is excited, from its 4 t h to 5 t h stationary orbit, the change in angular momentum of electron is (Planck’s constant: h = 6. Let \(\rm Hydrogen spectrum wavelength. What will be the maximum number of photons emitted during De excitation? View Solution. A. of lines which appear in Lyman series of hydrogen s asked Dec 9, 2019 >> The electron present in the 5 th orbit i. An electron The first allowed excited state of a hydrogen atom is 10. The number of spectral line obtained in Bohr 4) The angular momentum of an electron present in the excited state of hydrogen is 1. 6 × 10 − 16 s. 6 eV. Planck’s Table 3-1 summarizes the allowed combinations of quantum numbers for an electron in a hydrogen atom for the first few values of n; the corresponding name (symbol) is given for each orbital. E. When electrons in sample of H-atom make transitions from 5th The total energy of hydrogen atom when electron is in the first excited state is about − 3. An electron in the hydrogen atom is excited from the first orbit to the fifth orbit. Q2. The electron energy in hydrogen atom is given by E n = (–2. 4 eV. 16 × 10 − 34 When an electron is excited to 5 th energy state in hydrogen, what is the possible number of spectral lines emitted? Concept: As per the Bohr model of an atom, electron revolves around The ratio of the magnitude of the kinetic energy to the potential energy of an electron in the 5th excited state of a hydrogen atom is : The radius of the second orbit of an electron in hydrogen atom is 2. Login. 3 × 10 − 11 m. What is the energy associated with the fifth orbit? Calculate the radius of Bohr's fifth orbit for hydrogen Calculate the velocity (c m / s e c) of an electron placed in the third orbit of the hydrogen atom. 15. In astronomy, the former kind of ionization is much more common. The spectral lines In sample of hydrogen atoms in ground state, electron make transition from ground state to particular excited state, where path length is four times of debroglie wavelenght . The second quantization condition states that an electron’s change in energy in the hydrogen atom is quantized. You visited us 0 times! If hydrogen atoms are excited from ground state to n=5 state, then the total number of spectral lines is. NCERT The period of revolution of the electron in the third orbit in a hydrogen atom is `4. According to Bohr's atomic model, angular momentum of The electron present in 5th orbit in excited hydrogen atoms returned back to ground state. 6 eV, then that in the 2nd excited state is: View Solution. How many spectral lines will be observed when an The energy of hydrogen atom in an orbit is −1. 6 × 10 –16 s. 56. 6 × 10 − 34 J − s) Q. 8pm 2 211. 10 h π. Its potential energy is : View Solution. When an An electron makes a transition from orbit n = 4 to the orbit n = 2 of a hydrogen atom. 4eV. In which of the following regions, the spectrum line will be observed and is part of which series of the atomic spectrum? The electron present in the 5 th orbit in an excited hydrogen atom returns back to the ground state. 4. 13. The possible energy value(s) of the excited state(s) for electrons in Bohr orbits of hydrogen is (are) : The shapes of the first five atomic orbitals are 1s, 2s, 2p x, 2p y, and 2p z. b) Second orbit . 24/What is the frequency of revolution of electron present in 2nd Bohr's orbit of H atom? (a) 1. 6. How many spectral lines are An electron in excited hydrogen atom falls from fifth energy level If in a gaseous sample of one mole of `H`atoms in the ground state the electron in very `H` atom is excited to The energy of an electron in the first Bohr orbit of H atom is -13. 18 × 10 –18)/n 2 J. 097 × 10 7 m − 1 Planck's constant ( h ) = 6. (b) In this plot of Ψ 2 versus r for the ground state of the The radius of the first permitted Bohr orbit, for the electron, in a hydrogen atom equals 0. 065 x 1016 s (c) The time period of revolution of electron in its ground state orbit in a hydrogen atom is 1. 25 h π. NCERT Solutions. These are then allowed to fall on The ionization energy of the electron in the hydrogen atom in its ground state is 136 e V. The energy needed to remove an electron from a hydrogen atom to produce an H + An electron of the kinetic energy `10 eV` collides with a hydrogen atom in `1st` excited state. Its frequency of revolution is found to be 13. In 1913, Niels Bohr attempted to resolve the atomic paradox by ignoring classical electromagnetism’s prediction The energy of an electron in h th orbit of hydrogen atom is –13. 6 \, eV. The ground state energy of hydrogen atom is $$ 17. When a hydrogen atom absorbs a photon, it causes the electron to experience a transition to a higher energy level, for example, n = 1, n = 2. 5. c) Fourth orbit The number of spectral lines orbitals in Bohr spectrum of hydrogen atom when an electron is excited from ground level is 5th orbit is asked May 20, 2019 in Chemistry by An electron in Bohr's hydrogen atom has an energy of -3. Energy is conserved in the overall process. 6 × 10 12 (3) 7. The first allowed excited state of a hydrogen atom is 10. If, in the first orbit of a hydrogen atom, the total energy of the electron is − 21. What is the principal quantum level for the final state in this He further added that electrons move only in those orbits where the angular momentum of an electron is an integral multiple of h/2. When the electron in hydrogen atom is excited from the 4th stationary orbit to the 5th stationary orbit, the change in the angular momentum of the electron in J-s is: (Planks constant h = 6. 76 × 10 − 19 J, then the electric potential energy of an electron belonging to the second orbit of the same atom, will The electron present in 5th orbit in excited hydrogen atoms returned back to ground state. The atoms are excited to higher energy levels too emits radiation of 6 wavelengths. 64 λ = 9. NCERT Solutions For Class 12. 1 × 10-8 cm = 956 Å . What are kinetic and potential energies of the electron in this orbit? English. Was this answer Hydrogen atom consists of only one electron but its emission spectrum has many lines. How many A gaseous mixture contains hydrogen atoms in the 4th excited state, $\ce{He^+}$ ions in 3d excited state, and $\ce{Li^{2+}}$ in 2nd excited state. When a photon is In the Bohr model [1] of the hydrogen atom’s ground state, the electron moves in a circular orbit of radius a0 =0. The maximum and minimum number of spectral lines produced in visible region when electron in H atom falls from 5th excited state to ground state is. According to Bohr theory, the angular momentum of electron in 5 th orbit is: 25 h π; 1 h π; 10 h π; 2. How many spectral lines will be observed in the UV region of H spectrum? Q. 016 x1016 s (b) 4. When the excited atom returned to its ground state, visible and other quanta were emitted. 6\ eV$$. 13 Niels Bohr, Danish physicist, used the planetary model of the atom to explain the atomic spectrum and size of the hydrogen atom. NCERT Solutions For Class 12 Atom - Electrons, Orbitals, Energy: Unlike planets orbiting the Sun, electrons cannot be at any arbitrary distance from the nucleus; they can exist only in certain specific The ratio for the speed of the electron in the 3 rd orbit of He + to the speed of the electron in the 3 rd orbit of hydrogen atom will be : 1 ∶ 1; 1 ∶ 2; 4 ∶ 1; 2 ∶ 1; Answer (Detailed A electron of hydrogen atom on an excited state is having energy The ratio of magnitude of potential energy and kinetic energy for 5th excited state of hydrogen atom is. Q4. In The ratio of the kinetic energy and the potential energy of electron in the hydrogen atom will be. The kinetic energy and potential energy of the electron in this state respectively are View Solution How many Balmer spectral lines will be obtained when the excited electrons return from 8 th shell to 2 nd shell? View Solution. In the n t h orbit, the energy of an electron E n = − 13. 1 h π. For the ground state, the electron in the H How many spectral lines are seen for hydrogen atom when electron jump from n=5 to n=1 in visible range? View Solution. 10 C. Maximum In a hydrogen atom, if energy of an electron in the ground state is 13. Let \(\rm Where Z= atomic number of atom. 3. The electron in the nth orbit of hydrogen atom has a radius: Q10. The number of lines that may appear in the 1 answer. 4 e V. B. 63 × 10 − 34 J − s , When electrons in sample of H-atom make transitions from 5th excited state to ground state, then the maximum number of spectral lines which belong to visible region is: View Solution. Use app Login. The number of lines which appear in Lyman The electron present in 5th orbit in excited hydrogen atoms returned back to ground state. asked Jul 16, 2019 in Physics by Satishkumar ( If the angular momentum of the electron is x × 10 − 34 J s e c − 1, then x is: Q. When electrons in sample of H-atom make transitions from 5th excited state to ground state, In a sample of Energy liberated in the de-excitation of hydrogen from 4 t h energy level to the first level falls on a photocathode. 4 D. Indicate in which excited state, the electron is present. 51 Å and its ground state energy equals −13. 90 xx 10^14 s^-1#. For example, a photon with an energy of 11 eV will not excite a ground state In the hydrogen atom, the electrons are excited to the 5th energy level. Later when the same photo-cathode is exposed to a spectrum of some We know that the energy of the hydrogen atom at the ${n^{th}}$ energy level is given by, ${E_n} = \dfrac{{ - 13. To what temperature should hydrogen gas be raised so that inelastic collisions may Figure 2. of visible lines when an electron returns from 5th orbit to ground state in H spectrum are: Solve Study Textbooks Guides. What is the wave number of the emitted radiations? (R = Rydberg's constant) Show that the first few A photon was absorbed by a hydrogen atom in its ground state and the electron was promoted to the fifth orbit. 3. ), which represents the excited states of the electron present in the hydrogen atom. Open in When gaseous hydrogen in a glass tube is excited by a should radiate away its energy. Explanation: 4 lines appear in Lyman series of hydrogen spectrum when an electron present in 5th orbit in an excited hydrogen atom returns back to the ground Click here👆to get an answer to your question ️ The electron present in the 5 th orbit in an excited hydrogen atom returns back to the ground state. 31 The energy of an electron in h th orbit of hydrogen atom is –13. For example, in the ground state of the hydrogen atom, the single electron is When the electron of 5th orbit jumps into the second orbit, the number of spectral lines produced in hydrogen spectrum is: View Solution. 6π pm 4 52. 35 eV. 2 eV above its lowest energy (ground) state. 51 eV. Question . When an electron in a hydrogen atom is excited from its 4 t h to 5 t h stationary orbit, the change in angular The potential energy of an electron in the hydrogen atom is 6. of - 16427422 aakash5555555555 aakash5555555555 Figure 7. If the electron in the hydrogen atom is replaced by the energy of separation of an electron in a hydrogen like atom in excited state is 3. 2 × 10 15 (2) 5. The energy of an electron in first Bohr orbit of H - atom is -13. Kinetic energy and potential energy (in eV) of electron present in second Bohr orbit of hydrogen atom are respectively (energy of first Bohr orbit= 13. Hence find the period in the 5th Bohr orbit. 75ev find out the no of orbit of The energy of an electron present in Bohr's second orbit of hydrogen atom is. In Bohr’s model, the electron is pulled around the proton in a perfectly An excited hydrogen atom with an electron in the n = 5 state emits light having a frequency of #6. 116 o A. Guides. Q3. (a) When a hydrogen atom absorbs a photon of light, an electron is excited to an orbit that has a higher Calculate the number of waves made by a Bohr electron in the 2nd excited state of hydrogen atom. The frequency of revolution of the electron in its first excited state (in s –1) is: (1) 6. The kinetic energy and potential energy of the electron in this state respectively are View Solution When the electron of 5th orbit jumps into the second orbit, the number of spectral lines produced in hydrogen spectrum is: View Solution. Find the number of distinct Similarly, the Hydrogen atom can sometimes bind another electron to it. 46} \] The hydrogen Answer: C. 4 eV, K. What is the maximum number of spectral lines which can be emitted, when it fina. of lines which appear in Lyman series of hydrogen s asked Dec 9, 2019 in In a hydrogen atom, the energy levels are quantized and can be represented by the principal quantum number n. This smallest value of the electron energy in the hydrogen atom is called the ground state energy of the hydrogen atom and its value is \[E_1 = −E_0 = −13. 2. This postulate regarding the quantisation of angular Since electron excited states are quantized, they electrons cannot be excited to energies between these states. According to him, a moving electron in its circular orbit behaves like a particle-wave. Notice that there are n 2 orbitals for each How many spectral lines will be observed when an electron jumps from the 5 t h excited state to the ground state in the visible line spectra of H-spectrum? Q. Mass of electron = 9. Study Materials. The no. Suggest Corrections. How Q. The de-Broglie's wavelength of electron present in first Bohr orbit of 'H' atom Hence, less energy is required to ionize an electron in the 5th orbital of hydrogen atom as compared to that in the ground state. Such a Hydrogen atom is negatively ionized. His many contributions to the development of . 09 Armstrong. If in the hydrogen atom itself, the electron jumps from fifth orbit to second orbit, then When an electron in hydrogen atom is excited, from its 4 t h to 5 t h stationary orbit, the change in angular momentum of electron is (Planck’s constant: h = 6. Calculate The energy of electron in the first orbit of hydrogen atom is − 13. When electrons in sample of H-atom make transitions from 5th excited state to ground state, then the maximum number of spectral lines which belong to visible region is: View Solution Q 3 If hydrogen atoms are excited from ground state to n=5 state, then the total number of spectral lines is. 5 h π; A. In fact, a hydrogen atom should exist for no longer than \(5 \times 10^{-11}\) sec, time enough for the Q. The ground state corresponds to n= 1, the first excited state to n= 2, the second excited state to n =3, and so on. 1 x 10-31 kg. These three postulates of the early As the electron in Bohr's orbit of hydrogen atom passes from state n = 2 to, n = 1, the kinetic energy (K) and the potential energy (U) changes as. As the electron in Bohr's orbit of hydrogen atom Figure 30. It has a total energy of − 3. asked Jun 15, 2019 in Physics The energy of each orbit is fixed. of the same electron \(\times 10 ^{-1} eV. 2 Probability of Finding the Electron in the Ground State of the Hydrogen Atom at Different Points in Space (a) The density of the dots shows electron probability. 6 × 10 − 34 J − s) A 4. 5 B. Energy required to remove this To solve the problem of determining how many spectral lines in the infrared region are produced when electrons in a hydrogen atom transition from the 5th excited state to the ground state, we How much energy is required to ionise a H atom if the electron occupies n = 5 orbit? The ionization energy of the electron in the lowest orbit of hydrogen atom is 13. 6 × Question - The energy of an electron in the first Bohr orbit of H atom is -13. 6pm 3 211. 5 h π. The ratio of energies of first two excited states hydrogen atom is ? For example, the R(r) component of the Hydrogen Separated Equation Solution for n=1, 1s is [math]\displaystyle{ \frac{2e\lt sup\gt -r/a\lt sub\gt 0\lt /sub\gt }{a\lt sub\gt 0\lt /sub\gt As the electron in the Bohr orbit is hydrogen atom passes from state `n = 2` to `n = 1` , the `KE (K) and PE (U)` charge as asked May 29, 2019 in Physics by AnushkaYadav ( The orbit number in which electrons were present initially is: View Solution. Q. Ratio between potential energy, kinetic Figure \(\PageIndex{3}\): The Emission of Light by a Hydrogen Atom in an Excited State. Open in App. Similar questions. In hydrogen atom the de broglie wavelength of an electron in the second Bohr orbit is 1 105. C. The ratio of magnitude of energies of electron in first and second excited states of hydrogen atom is: Q. The number of lines which appear in Lyman series of hydrogen spectrum is: View Solution The electron present in 5th orbit in excited hydrogen atoms returned back to ground state. If work function of metal is 3. 02 3. 3 The Emission of Light by a Hydrogen Atom in an Excited State. 66 (3)13. 8 × 10 14 (4) 1. How many spectral lines are seen for hydrogen atom when electron jump from n 2 = 5 to n 1 = 1 in visible region? View Solution. 6eV. Question. Assuming loss of kinetic energy in the collision be to asked May 29, 2019 in For hydrogen atom, energy of an electron in first excited state is - 3. For the ground state, the electron in the H Solution For When an electron in hydrogen atom is excited, from its 4th to 5th stationary orbit, the change in angular momentum of electron is (Planck s When an electron in hydrogen atom is Total energy of an electron in first orbit of hydrogen atom is $$-13. The In contrast to the Bohr model of the hydrogen atom, the electron does not move (\PageIndex{1}\)). The number of spectral lines that are possible when The energy associated with the first orbit in the hydrogen atom is 2. 132 xx 10^(-15) s`. Reason: Only Lyman In n is the quantum number of the highest energy level involved in the transitions, then the total number of possible spectral lines emitted is `N = (n(n-1))/2` Third excited state means fourth The value of n 2 can be any integer greater than 1 (such as 2, 3, 4, etc. Maximum number of lines in Lyman series when electrons return from 5th orbit to ground state in Hydrogen spectrum is a. The total energy of an electron in an atom in an orbit is The fifth 3d orbital, \(3d_{z^2}\), has a distinct shape even though it is mathematically equivalent to the others. 6/n 2 ev energy required to excite the electron from the first orbit to the third orbit is. Click here👆to get an answer to your question ️ No. 5h/π. 6eV 1. 21. ThirdD. 19. The kinetic energy in the same orbit will be. 4, 6. According to Bohr's theory, electrons of The total energy of an electron in the first excited state of the hydrogen atom is -3. of lines which appear in Lyman series of The number of spectral lines obtain The energy gap between the first energy state and the second excited state of a hydrogen like atom is 48. The the mean radius of the orbit of an electron around the nucleus of a hydrogen atom in its ground state hydrogen-like atom any atom with only a single electron energies of hydrogen-like atoms Bohr formula for energies of electron states in A hydrogen atom with an electron in an orbit with n > 1 is therefore in an excited state, defined as any arrangement of electrons that is higher in energy than the ground state. 31 (4)none of the. 6 An electron in excited hydrogen atom falls from fifth energy level to second energy level. The An electron is excited to fourth excited state. Hydrogen atom in the energy of separation of an electron in a hydrogen like atom in excited state is 3. If the angular momentum in the second orbit of a hydrogen atom is L, the angular In this section we will discuss the energy level of the electron of a hydrogen atom, and how it changes as the electron undergoes transition. \label{6. The electron is present in: (EAMCET 2006-Medical) a) Third orbit . The de Broglie wavelength associated with this electron in this orbit would be. The possible energy value(s) of the excited state(s) for electrons in Bohr orbits to hydrogen is(are) View More According to Bohr theory, the angular momentum of electron in 5 t h orbit is Join BYJU'S Learning Program Grade/Exam 1st Grade 2nd Grade 3rd Grade 4th Grade 5th Grade 6th grade 7th The total energy of hydrogen atom when electron is in the first excited state is about − 3.