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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

Hydrogen

B

`Li^(+)`

C

Na

D

He

Text Solution

Verified by Experts

The correct Answer is:
A
`He^(+)` has one electron. Therefore its spectrum will be similar to hydrogen `(Z = 1)` which also have one electron in its atom.
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DINESH PUBLICATION-ATOMIC STRUCTURE-Revision Questions
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  2. When the azimuthal quantum number l = 1, the shape of the orbital will...

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

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  4. Sodium chloride imparts a yellow colour to the Bunsen flame .This ca...

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  6. For the energy levels in an atom , which one of the following statem...

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  7. Subsidiary quantum number specifies

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  8. As we move away from nucleus, the energy of orbit

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

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  10. The maximum number of electrons in a subshell is given by the expressi...

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  11. The atomic numbers of Ni and Cu are 28 and 29 respectively. The electr...

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  12. The correct set of quantum numbers for the unpaired electron of chlori...

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  13. Which of the following sets of quantum numbers is not possible?

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  14. The number of spherical nodes in 3p orbitals are

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  15. No two electrons in atom can have

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  16. Number of neutrons in heavy hydrogen atom is

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  17. If r is radius of first orbit , the radius of nth orbit of the H atom ...

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  18. The energy of a hydrogen atom in its ground state is -13.6 eV. The ene...

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  19. At 200^(@)C, hydrogen molecules have velocity 2.4 xx 10^(5) cm s^(-1) ...

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  20. An electron has a spin quantum number +1(1)/(2) and a magnetic quantum...

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