(a)Find the first excitation potential of `He^(+)` ion (b)Find the ionization potential of `Li^(++)` ion

Answer

A, B, D

Explanation

(a) First excitation Potential of
`He^+ = 10.2 xx Z^2`
`=10.2 xx 4 = 40.8 V`
(b) Ionization Potential `Li^(++)`
`=13.6 V xx Z^2`
=`13.6 xx 9 = 122.4 V`.