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The frequency of light emitted for the t...

The frequency of light emitted for the transition `n = 4` to `n =2` of `He^+` is equal to the transition in `H` atom corresponding to which of the following ?

A

`n=3` to `n=1`

B

`n=2` to `n=1`

C

`n=3` to `n=2`

D

`n=4` to `n=3`

Text Solution

Verified by Experts

The correct Answer is:
B
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ALLEN-ATOMIC STRUCTURE-Exercise - 05[A]
  1. Ionisation energy of He^+ is 19.6 xx 10^-18 J "atom"^(-1). The energy ...

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  2. A gas absorbs a photon of 355 nm and emits at two wavelengths . If on...

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  3. The frequency of light emitted for the transition n = 4 to n =2 of He^...

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  4. The increasing order of the ionic radii of the given isoelectronic spe...

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  5. The electrons, identified by quantum number n and l i. n = 4,l=1 ii....

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  6. Which of the following is the energy of a possible excited state of h...

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  7. A stream of electrons from a heated filament was passed between two ch...

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  8. The total number of orbitals associated with the principal quantum num...

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  9. Rutherford's experiment , which established the nuclear model of atom...

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  10. The spin magnetic moment of cobalt in the compound Hg[Co(SCN)(4)] is

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  11. The radius of which of the following orbit is same as that of the firs...

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  12. a.The schrodinger wave equation for hydrogen atom is psi(2s) = (1)/(4s...

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  13. a.Calculate the velocity of an electron in the first Bohr's orbit of ...

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  14. Given in hydrogen atom r(n),V(n),E,K(n) stand for radius, potential en...

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  15. Match the entries in Column I with the correctly related quantum numbe...

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  16. The hydrogen -like species Li^(2+) is in a spherically symmetric stat...

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  17. The hydrogen -like species Li^(2+) is in a spherically symmetric stat...

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  18. The hydrogen -like species Li^(2+) is in a spherically symmetric stat...

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  19. The maximum number of electrons can have principal quantum number n ...

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  20. The work function (phi) of some metals is listed below. The number of...

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