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When H2 atom, in an excited state, emits...

When `H_2` atom, in an excited state, emits is photon of energy 12.1 eV, its orbital angular momentum changes by

A

`1.05 xx 10^-34`

B

`2.11 xx 10^-34 Js`

C

`3.16 xx 10^-34`

D

`4.22 xx 10^-34`.

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