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For the energy levels in an atom , whic...

For the energy levels in an atom , which of the following statement is //are correct ?

A

Thre are seven principal electron energy levels

B

The second principal energy level can have 4 sub-energy levels and contain a maximum of 8 electrons

C

The M energy level can have a maximum of 32 electrons.

D

The 4s sub energy level is at a lower enerty than the 3d sub energy level.

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The correct Answer is:
A, D
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  7. An electron is not deflected on passing through a certain region , bec...

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  8. Which of the following is/are correct form of Heisenberg's indetermina...

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  9. Consider these electronic configurations for neutral atoms: (i) 1s^(...

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  10. For the energy levels in an atom , which of the following statement ...

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  11. Which of the following statements are correct for an electron that has...

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  12. The hydrogen line spectrum does not provide evidence for the

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  13. In a malti-electrons atom which of the following orbitals deseribed...

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  16. Which of the following is the correct set of four quantum numbers for ...

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  18. Choose the correct statements

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  19. Which is correct statement in case of Hund's rule ?

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  20. Which of the followng statement are correct?

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