JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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A quantity of

1.0 \mathrm{~g}

hydrogen atoms are excited to radiations. The study of spectra indicates that

45 \%

of the atoms are in third energy level and

40 \%

of atoms in second energy level and the rest in ground state. The total energy (in

\mathrm{kJ}

) evolved, when all the atoms return to ground state is (Ionization energy of hydrogen atom is

1310 \mathrm{~kJ} / \mathrm{mol}

)

View answer and explanation

Correct option: A

917

Option A (917 kJ) is correct because it is calculated by summing the energy released when atoms transition from the third and second energy levels to the ground state.

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