Energy required to excite the electron in a hydrogen atom, Chemistry

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The ionization energy of hydrogen atom is -13.6eV.  The energy required to excite the electron in a hydrogen atom from the ground state to the first excited state is (Avogadro's constant = 6.022 × 1023):

(1) 1.69x 10-20J                

(2) 1.69x 10-23

(3) 1.69x 10-23J               

(4) 1.69x 10-25

Ans:  1.69x 10-23J

 


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