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JEE CHEMISTRY MCQ: STRUCTURE OF ATOM

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Electromagnetic radiations of wavelength 240

\mathrm{nm}

are just sufficient to ionize sodium atom. The ionization energy of sodium (in

\mathrm{kJ} / \mathrm{mol}

) is

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Correct option: B

498.58

Option B (498.58) is correct because the ionization energy is calculated using the given wavelength and the formula I.E. = hc/λ.

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