Question

In hydrogen atom an orbit has a diameter of about 16.92 A. What is the maximum number of electrons
that can be accomodated?
2) 32
3) 50
4) 72​

Answer 1

Diameter of 16.92

Thus radius is 8.96 ———(elementary)

According to Bohr's postulates

Radius of n.th orbit = 0.529×n^2 for an hydrogen atom

Thus n = 4. (Approx.; n = (16.937)^(0.5)). —————(elementary algebra)

Thus again according to another of the postulate

The no. Of electrons that can be accommodated in any orbit is 2n^2 with n being the orbit number

Thus n^≈ 16

2n^2 ≈ 32