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 10-²³J

(3) 1.69x 10^-23J

(4) 1.69x 10-²⁵J

Ans: 1.69x 10^-23J

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