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The wave number of energy emitted when e...

The wave number of energy emitted when electron jumbs from fourth orbit to second orbit in hydrogen in 20,497 `cm^(-1)`. The wave number of energy for the same transition in `He^(+)` is

A

`5,099 cm^(-1)`

B

`20,497 cm^(-1)`

C

`40,994 cm^(-1)`

D

`81,988 cm^(-1)`

Text Solution

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The correct Answer is:
D
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AAKASH SERIES-ATOMS-EXERCISE - II
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  2. The ratio of the largest to shortest wavelengths in Balmer series of h...

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  3. An electron in a hydrogen atom makes a transition n(l) 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 transtion ...

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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 vartheta(1) be the frequency of the series limit of the Lyman seri...

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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 m vartheta^(2) bombards a heavy nuclear...

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

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  16. An alpha-particle of energy 5 Mev is scattered through 180^(@) by a fi...

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

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  18. Energy required for the electron excitation in Li++ from the first to ...

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

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