Question

Which of the following is the energy of a possible excited state of hydrogen?

• A. $+13.6eV$
• B. $-6.8eV$
• C. $-3.4eV$
• D. $+6.8eV$

Answer 1

Answer: (C)

$\therefore E_n=-\frac{13.6}{n^2}eV$
where, $n=1,2,3\dots$
In excited states, $E_2=\frac{-13.6}{4}=-3.4eV$