Structure Of Atom Ques 14

14. If $r$ is the radius of the first orbit, the radius of $n^{\text {th }}$ orbit of $\mathrm{H}$-atom is given by

$[1988]$

(a) $r n^2$

(b) $r n$

(c) $r / n$

(d) $r^2 n^2$

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Answer:

Correct Answer: 14.(a)

Solution: (a) Radius of $n^{\text {th }}$ orbit $=r_1 n^2$. (for H-atom)