If the first excitation potential of a hypothetical hydrogen like atom is 15 V, then the third excitation potential of the atom is

If the first excitation potential of a hypothetical hydrogen like atom

1.	If the first excitation potential of a hypothetical hydrogen like atom is 15 V, then the third excitation potential of the atom is
Answer» 10.2 V 12 V 14 V 16 V SOLUTION :IP` = 13.6 Z^2 = 16` (given) `1^(st)` excitation potential `= 13.6 xx 3/4 xx Z^2` `= 16 xx 3/4 = 12 V`