Which of the following radius of orbits in hydrogen atom are possible ?

Options

A. 52.9 pm
B. 182 pm
C. 211 pm
D. 364 pm

Answer

A, C

Explanation

`r= n^2 xx 5.29 ` pm
For first shell , r= 52.9 pm
For second shell , r =` 52.9xx4 = 211.6 `pm