Question

According to Bohr's theory the radius of electron in an orbit described by principal quantum number n and atomic number Z is proportional to

• A. $Z^2{n}^2$
• B. $\frac{Z^2}{n^2}$
• C. $\frac{Z^2}{n}$
• D. $\frac{n^2}{Z}$

Answer 1

The correct option is D $\frac{n^2}{Z}$

$r=\frac{{\epsilon }_0{n}^2{h}^2}{\pi Zm{e}^2};r\infty \frac{n^2}{Z}$