The energy of hydrogen atom in its ground state is –13.6 eV. The energy of the level corresponding to the quantum number n is equal 5 is
Answer & explanation
Correct answer: option 4
$E_n=-\frac{13.6}{n^2} ~eV \Rightarrow E_{5}=\frac{-13.6}{5^2}=\frac{-13.6}{25}=-0.54 ~eV$