The wave number of a particular spectral line in the atomic spectrum of a hydrogen like species increases 9/4 times when deuterium neuleus is introduced into its nucleus, then which of the following willbe the initial hydrogen like species?

The wave number of a particular spectral line in the atomic spectrum o

1.	The wave number of a particular spectral line in the atomic spectrum of a hydrogen like species increases 9/4 times when deuterium neuleus is introduced into its nucleus, then which of the following willbe the initial hydrogen like species?
Answer» `LI^(2+)` `Li^(+)` `He^(+)` `Be^(3+)`. ANSWER :D