Question

26.
Which electronic level would allow the hydrogen atom to absorb a photon but not to emita photo
(A) 3s
(B) 2p
(C)2s
(D) is​

Answer 1

Answer:

answer is 1s (d)

Explanation:

The energy of 1s orbital is very less. it can gain energy(absorb photon) but cannot lose energy as n+l =1 rest all have n+l values are 3,3,2 and have energy more than that of 1s orbital. so 1s cannot radiate energy(emit photon).

so 1s orbital cannot emit photon but can absorb photon.

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