These are the options for the question :The radius of the innermost electron orbit of a hydrogen atom is 5.3×10–11 m. The radius of the n =3 orbit is (i) 1.01 x 10-10m (ii) 1.59 X 10-10m (iii) 2.12 x 10-10m (iv) 4.77 X 10-10m The correct answer is -(iv) 4.77 X 10-10m
