Question

The gyro-magnetic ratio of an electron in an H-atom, according to Bohr model, is ______.

1. independent of which orbit it is in.
2. negative.
3. positive.
4. increases with the quantum number n.

विकल्प

• a and b

• a and c

• b and c

• c and d

Answer 1

a and b

Explanation:

Angular momentum of electron (L) = nh/2π

Magnetic moment of electron M = neh/4πm

Gyromagnetic ratio = magnetic moment/angular momentum

2πneh/4πnhm

= e/2m

= constant

It is independent of the orbit in which the electron is revolving.

Since e is negative, the geomagnetic ratio is negative.