Question

Radius of tenth Bohr orbit of the hydrogen atom is _______ $A^0$.

• A. 0.53
• B. 5.3
• C. 53
• D. 0.053

Answer 1

The correct option is C 53

Radius (r)=$=0.53n^2{A}^0$

$\therefore$ Radius of ${10}^{th}$ orbit$=\left(0.53\right)\times {\left(10\right)}^2$

$=0.53\times 100$

$=53A^0$