Question

Experimentally it is found that 12.8 eV energy is required to separate a hydrogen atom into a proton and an electron. So the orbital radius of the electron in a hydrogen atom is$\frac{ 9}{x} x 10^{-10}$m. The value of the x is _____.
(1eV = 1.6 x 10-19J, $\frac{1}{4π∈_0}$ = 9 x 109 NM2 / C2 and electronic charge = 1.6 x 10-19JC)

Answer 1

The correct answer is: 16