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Q 3152180934.     The ionisation energy of hydrogen atom is
`1.312 xx 10^6 J mol^(-1)` Calculate the energy
required to excite an electron in a hydrogen atom
from the ground state to the first excited state.
(Avogadro's constant `= 6.023 xx 10^(23)` )
(Provided By a Student and Checked/Corrected by EXXAMM.com Team)