Question

The angular momentum of electron in hydrogen atom in first orbit is ‘L’. The change in angular momentum if electron is in second orbit of hydrogen atom is ______.

Options

• 2L

• L

• `L/2`

• 4L

Answer 1

The angular momentum of electron in hydrogen atom in first orbit is ‘L’. The change in angular momentum if electron is in second orbit of hydrogen atom is L.

Explanation:

Change in Angular Momentum (ΔL) = L₂ − L₁

= `(n_2 h)/(2 pi) - (n_1 h)/(2 pi)`

= `h/(2 pi) (2 - 1)`

= `h/(2 pi)`

= L