Question

The minimum energy required to excite a hydrogen atom from its ground state is.

• A. 13.6 eV
• B. $- 13.6\mspace{6mu} eV$
• C. 3.4 eV
• D. 10.2 eV

Answer 1

Answer: (D)

10.2 eV

Answer 2

Minimum energy required to excite from ground state $= 13.6\left\lbrack \frac{1}{1^{2}} - \frac{1}{2^{2}} \right\rbrack = 10.2\mspace{6mu} eV$