Question

The energy of hydrogen atom in its ground state is –13.6 eV. The energy of the level corresponding to n = 5 is:

• A. –0.54 Ev
• B. –5.40 eV
• C. –0.85 eV
• D. –2.72 eV

Answer 1

Answer: (A)

–0.54 Ev

Answer 2

$E_{n}\text{ = }\text{E}_{1}$

$E_{5}\text{ = - 13.6 }\text{×}\frac{(1)^{2}}{(5)^{2}}\text{ = - 0.54 eV}$