Question

R momentum of an electron in any orbit of hydrogen atom is propartionality to

Answer 1

a) 1/r1/2
b) 1/r
c) r1/2
d) r2

Answer 2

Hello there,

● Correct question should be -
The angular momentum of an electron in a hydrogen atom is proportional to (where r is radius of orbit )
a) 1/√r
b) 1/r
c) √r
d) r^2

● Answer -
(c) √r

● Explaination -
We know,
r ∝ n^2
∴ n ∝ √r

Angular momentum of electron is -
L = nh / 2π
∴ L ∝ n
∴ L ∝ √r

Therefore, angular momentum of electron is directly proprtional to square root of orbital radius.

Hope this helps you...