Question

The radius of first orbit of hydrogen atom is 0.53Å. The radius
of its fourth orbit will be
(a) 2.12Å (b) 8.48 Å
(c) 0.13Å (d) 0.03 Å

Answer 1

Answer:

ans is 8.48

Explanation:

the formula is r'=(n^2÷z) r

Answer 2

Answer:

I Don't know the answer mate of this question