According to Bohr's principle, which is the correct relation between principle quantum number (n) and radius of orbit (r ) ?

Options

A. `rpropn`
B. `rpropn^(2)`
C. `rprop1/n`
D. `rprop1/n^(2)`

Answer

B

Explanation

Bohr suggested a formulae to calculate the radius and energy of each orbit and gave the following formulae
`r_(n)=(n^(2)h^(2))/(4pi^(2)kme^(4)Z)`
Where except `n^(2)`, all other unit are constant so `r_(n)propn^(2)`.