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Bohr's Model of a Hydrogen Atom

Out of given ...

Question

Out of given atoms which atoms has highest energy of 2s-subshell ?

A

H

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B

Li

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C

Na

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D

All have same

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Solution

The correct option is B H
$H$ has $2 s -$ orbital which is not accessed by any $e^{-}$ so is of maximum energy.

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