In the following atoms and moleculates for the transition from n= 2 to n = 1, the spectral line of minimum wavelength will be produced by
Answer & explanation
Correct answer: option 4
$\frac{1}{\lambda}=R Z^2\left(\frac{1}{1^2}-\frac{1}{2^2}\right)$
For di-ionised lithium the value of Z is maximum.