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The electronic transition from n=2 to n=...

The electronic transition from n=2 to n=1 will produce shortest wavelength in:

A

H atom

B

D atom

C

`He^+ ion`

D

`Li^(2+)`

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The correct Answer is:
D
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MBD PUBLICATION-STRUCTURE OF ATOM-QUESTION TYPE
  1. Which transition metal cation has maximum unpaired electrons ?

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  2. The equation lambda=h/mu was deduced by:

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  3. The electronic transition from n=2 to n=1 will produce shortest wavele...

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  4. Which has highest e/m ratio ?

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  5. Transition from n = 4, 5, 6 to n = 3 in hydrogen spectrum gives:

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  6. The mass of a neutron is of the order of:

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  7. Electrons occupy the available sub-level which has lower n+l value. Th...

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  8. Which is not electromagnetic radiation ?

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  9. Which wave property is directly proportional to energy of electromagne...

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  10. The principle which gives a way to fill the electrons in the available...

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  11. The relation between energy of a radiation and its frequency was given...

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  12. The angular momentum of electron of H atom is proportional to:

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  13. The frequency of first line of Balmer series in hydrogen atom is V0. T...

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  14. Which are isoelectronic with each other ?

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  15. Size of the nucleus is:

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  16. The orbital angular momentum of an electron in 2s-orbital is:

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  17. The number of vacant orbitals of element with atomic number 14 is:

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  18. Which of the following has the maximum number of unpaired electrons ?

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  19. For a 'd' electron, the orbital angular momentum is:

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  20. The lightest particle is:

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