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Bohr's Model of a Hydrogen Atom

Which of the ...

Question

Which of the following are true in relation to hydrogen atom:

A

3s is lower in energy than 3p

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B

3p is lower in energy than 3d

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C

3s and 3p are lower in energy than 3d

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D

3s,3p and 3d-all have same energy

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Solution

The correct option is D 3s,3p and 3d-all have same energy
There are no electrons in any subshell of the third shell in hydrogen. Hence they are degenerate.

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