Question

(i)what is wawelength of Hb line in balmer series of H spectrum
(ii)When e are de exciting from nth orbit to ground level of H atom of 15 spectral lines are formed during shortest wawelength among them is
(iii)The radii of 2 of first 4 orbits of H atom are in ratio 1:4,the energy diference may be

Answer 1

use formula of rz^2*i/n^2-!/n^2