Chemistry - Atomic Structure Question with Solution | TestHub

Velocity is given as
${\mathrm{V}}_{\mathrm{n}}=2.18\times 10^6\times \frac{\mathrm{Z}}{\mathrm{n}}$
${\mathrm{V}}_{\mathrm{n}}\propto \mathrm{Z}\propto \frac{1}{\mathrm{n}}$
Hence graphs in option is C is correct.