MCQ
Which electronic level would allow the hydrogen atom to absorb a photon but not to emit a photon
- A$3s$
- B$2p$
- C$2s$
- ✓$1s$
✓
Answer
Correct option: D.
$1s$
d
(d) $1s-$ orbital is of lowest energy. Absorption of photon can raise the electron in higher energy state but emission is not possible.
(d) $1s-$ orbital is of lowest energy. Absorption of photon can raise the electron in higher energy state but emission is not possible.
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