Question

The total energy of an electron in $4^{th}$ orbit of hydrogen atom is

• A. $-13.6eV$
• B. $-3.4eV$
• C. $-1.51eV$
• D. $-0.85eV$

Answer 1

Answer: (D)

For hydrogen atom
$E_n=\frac{-13.6}{n^2}eV$
$E_n=\frac{-13.6}{4^2}eV$
$=-0.85eV$