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The spectrum of He is expected to be sim...

The spectrum of `He` is expected to be similar to that of

A

H

B

Na

C

`He^(+)`

D

`Li^(+)`

Text Solution

Verified by Experts

The correct Answer is:
D
He has two electrons, `Li^(+)` also has two electrons.
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DINESH PUBLICATION-ATOMIC STRUCTURE-Revision Questions
  1. Which of the following element's outermost orbit's last electron has m...

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  2. which of the following ions has the maximum magnetic moment ?

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  3. The spectrum of He is expected to be similar to that of

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  4. Chloride ion and potassium ion are isoelectronic. Then

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  5. For f-orbital, the values of m are

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  6. The correct orders of increasing energy of atomic orbitals is

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  7. Which of the following is not isoelectronic ?

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  8. As the nuclear charge increases from neon to calcium, the orbital ener...

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  9. The value of the energy for the first excited state of hydrogen will b...

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  10. In hydrogen atom, energy of first excited state is - 3.4 eV. Then, KE...

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  11. The energy of the first electron in helium will be

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  12. In a hydrogen atom, if energy atom, if energy of an electron in group ...

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  13. In the Bohr's orbit, what is the ratio of total kinetic energy and tot...

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  14. The configuration 1s^(2) 2s^(2) 2p^(5) 3s^(1) shows

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  15. The ratio between kinetic enegry and total enegry of the electrons of ...

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  16. The value of Planck's constant is 6.63 xx 10^(-34)Js. The velocity of ...

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  17. In Bohr series of lines of hydrogen spectrum, third line from the red ...

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  18. The de-Broglie wavelength of a tennis ball mass 60 g moving with a ve...

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  19. The orbital angular momentum for an electron revolving in an orbit ...

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  20. The number of d-electrons retained in Fe^(2+) (At. no. of Fe = 26) ion...

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