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Energy required for the electron excitat...

Energy required for the electron excitation in `Li^(++)` from the first to the third Bohr orbit is:

A

36.3eV

B

108.8eV

C

122.4eV

D

12.1eV

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The correct Answer is:
B
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A single electron orbit around a stationary nucleus of charge + Ze where Z is a constant and e is the magnitude of the electronic charge. It requires 47.2 eV to excite the electron from the second bohr orbit to the third bohr orbit. Find (i) The value of Z (ii) The energy required by nucleus to excite the electron from the third to the fourth bohr orbit (iii) The wavelength of the electronmagnetic radiation required to remove the electron from the first bohr orbit to inlinity (iv) The energy potential energy potential energy and the angular momentum of the electron in the first bohr orbit (v) The radius of the first bohr orbit (The ionization energy of hydrogen atom = 13.6 eV bohr radius = 5.3 xx 10^(-11) matre velocity of light = 3 xx 10^(8) m//sec planks 's constant = 6.6 xx 10^(-34) jules - sec )

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AAKASH SERIES-ATOMS-EXERCISE - II
  1. When the electron in hydrogen atom jumps from the second orbit to the...

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  2. The ratio of the largest to shortest wavelength in Balmer series of hy...

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  3. An electron in a hydrogen atom makes a transition n(1) rarr n(2), wher...

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  4. Any radiation in the ultra violet region of Hydrogen spectrum is able ...

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  5. A hydrogen atom emits a photon corresponding to an electron transition...

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  6. The wave number of energy emitted when electron jumbs from fourth orbi...

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  7. In a Bohr atom the electron is replaced by a particle of mass 150 time...

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  8. If the wavelength of first member of Balmer series of hydrogen spectru...

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  9. A hydrogen like atom (atomic number Z) is in a higher excited state of...

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  10. Electrons from n = 2 to n= 1 in hydrogen atom is made to fall on a met...

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  11. Let v(1) be the frequency of the series limit of the Lyman series, v(2...

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  12. When a silver foil (Z = 47) was used in an alpha ray scattering exper...

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  13. In Rutherford experiments on alpha-ray scattering the number of partic...

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  14. An alpha nucleus of energy (1)/(2)mv^(2) bomobards a heavy nuclear tar...

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  15. In Rutherford's alpha particle scattering experiment with their gold f...

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  16. 240 coulombs of electricity is passed through a soluton of dilute supl...

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  17. The transition from the state n = 4 " to " n = 3 in a hydrogen like at...

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  18. Energy required for the electron excitation in Li^(++) from the first ...

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  19. Hydrogen (.(1)H^(1)), Deuterium (.(1)H^(2)), singly ionised Helium (...

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