Question

A hydrogen atom in ground state absorbs 10.2eV of energy.

Answer 1

Orbital angular momentum of the electron in H atom in the nth state is given by:

L = n×h/2π

for ground state n = 1

L=h/2π = 6.6×10^−34/2×3.14 = 1.05×10^−34 Js

Answer 2

TRICK ; It is said increased by in the question

Explanation:

The orbital angular momentum of an electron is given by : n h/2π

By absorbing 10.2 ev , it gets excited to the 2nd orbit

• Where the angular momentum = 2h/2π

• The increase in momentum = h/2π ( ie 1h/2π is at ground and taking the difference )

• The increase in momentum = 6.6 x 10⁻³⁴ / 2 x 3.14

                                               = 1.05 x10⁻³⁴

                          Hope you understand

This is Habel sabu .............Isn't it the Brainliest...............