The hydrogen -like species ` Li^(2+)` is in a spherically symmetric state ` S_1` whth one radisal node . Upon absorbing light the ion undergoes transitoj ot a state ` S_2` has one radial node and its enrgy is equal to the groun sate energy of hhe hydrogen atom.
The orbital angular momentum quantum number of the state ` s_2` is :

Answer

1

Explanation

`underset("1 radial node")("State A") overset("excitation")rarr underset("one radial node")("State B")`
`E_(B)=-13.6eV l= ?`
`"For "Li^(+2)" "E_(n)=((-13.6)(9))/(n^(2))`
Thus n = 3 for state B
Also `n-l -1=1 rArr 3-l -1=1 rArr l = 1`