Question
The radius of the first orbit of the electron of a hydrogen atom is 5.3 x 10-11 m. What is the radius of its second orbit ?
Solution
As,
rn = η2 r0
Here we have,
r2 = 4(5.3 x 10-11 m)
= 21.2 x 10-11 m
= 2.12 x 10-10 m.
