Question

If the ionization energy of hydrogen atom is $13.6$ eV, the energy required to excite it from ground state to the next higher state is approximately.

• A. $3.4eV$
• B. $10.2eV$
• C. $17.2eV$
• D. $13.6eV$

Answer 1

Answer: (A)

$3.4eV$

Answer 2

: $E_{n} = \frac{- E_{1}}{n^{2}}$

$E_{n1} = 13.6;E_{n_{2}} = \frac{13.6}{4} = 3.4eV$