The hydrogen -like species `Li^(2+)` is in a spherically symmetric state `S_(1)` with one node. Upon absorbing light , the ion undergoes transition to a state `S_(2)`. The state `S_(2)` has one radial node and its energy is equal is to the ground state energy of the hydrogen atom.
The orbital angular momentum quantum number of the state `S_(2)` is

Options

A. `0`
B. `1`
C. `2`
D. `3`

Answer

B

Explanation

Orbital angular momentum quantum number of 3p subshell, i.e., `l=1`
`underset(2s)(S_(1))overset("Transition")tounderset(3p)(S_(2))`