Question

According to Bohr's principle, the relation between principle quantum number $(n)$ and radius of orbit is :

• A. $r\propto n$
• B. $r\propto {{n}^{2}}$
• C. $r\propto \frac{1}{n}$
• D. $r\propto \frac{1}{{{n}^{2}}}$

Answer 1

Answer: (B)

$r\propto {{n}^{2}}$

Answer 2

Bohr gave following formula to calculate the radius of orbit.
$r_{n}=\frac{n^{2}\, h^{2}}{4 \pi^{2}\,{K} e^{2} \,Z^{2}}$
where all things except $n^{2}$ are constant
$r_{n} \propto n^{2}$