1. Tardigrade
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  4. A hydrogen atom in ground state absorbs 12.1 eV energy. The orbital angular momentum of electron is increased by:

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Q. A hydrogen atom in ground state absorbs $12.1\, eV$ energy. The orbital angular momentum of electron is increased by:

Atoms

Solution:

$12.1\, eV$ is the difference in energies of $n=1$ and $n=3$ for hydrogen atom so the electron is excited to $n=3$ state hence the angular momentum will become $3 h / 2 \pi$ from $h / 2 \pi$ hence the increase in angular momentum is given in option (B).