Question

The shotest wave length in H spectrum of Lymen series when `R_(H)`=`109678cm^(-1)` is.
A. `1002.7 Å`
B. `1215.67 Å`
C. `1127.30 Å`
D. `911.7 Å`

Answer 1

Correct Answer - D
For Lymen series `n_(1)=1`
For shortest wave length of Lymen series the energy differnece in two levels showing transition should be
maximum
`(i.e.n_(2)=oo)" "(1)/(lambda)=R_(H)[(1)/(1^(2))-(1)/(oo^(2)]]`
`=109678" " =911.7xx10^(-8)" "=911.7Å`