Question

Ratio of velocity of electron in the firat orbit of li to the secone orbit of h

Answer 1

v(Li) = k (1^2/3) here k=2.18 x 10^6m/s
= k/3

v(H) = k (2^2/1) = 4k
so v(Li) /v(H) = (k/3)/4k = 1:12