WBJEE Practice Quiz

Question 1

According to Bohr's model, the angular momentum of an electron revolving in the nth orbit of a hydrogen atom is:

Accepted Answer

n(h/2π)

Question 2

The radius of the first Bohr orbit of hydrogen atom is approximately:

Accepted Answer

0.529 Å

Question 3

A photon of energy 12.09 eV is absorbed by a hydrogen atom in the ground state. To which orbit is the electron excited?

Accepted Answer

n = 3

Question 4

For a hydrogen-like species, the radius of the nth orbit is proportional to:

Accepted Answer

n^2/Z

WBJEE — Mock tests