The energy required to excite an electron from the ground state of hydrogen atom to the first excited state, is

• A

  $1.602\times {10}^{-14}\mathrm{J}$

• B

  $1.69\times {10}^{-16}\mathrm{J}$

• C

  $1.632\times {10}^{-18}\mathrm{J}$

• D

  $1.656\times {10}^{-20}\mathrm{J}$