Question

11. The velocity of an electron in the second orbit of
H-atom is v. The velocity of electron in first orbit of
Li2+ is
(1) 6v
(2) 8v
(3) v
(4) 4v
​

Answer 1

The formula for velocity is v = 2.18×n×n÷z Where n is no. Of orbit and z is the atomic no. Of the atom. So in this case atom is h only so z will be same. Velocity will depend only on no. Of orbit Means v is directly proportional to n× n. V1/v2 = n1.