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MHT CET 2026 (19 Apr, Shift 2) · Energy of the Electron & Energy Levels

Energy of the Electron & Energy Levels question from MHT CET 2026 (19 Apr, Shift 2)

Q4MHT CET 2026 · 19 APR · SHIFT 2Easy

Energy of the Electron & Energy Levels

If the ionisation energy for the hydrogen atom is $13.6$ eV, then the energy required to excite it from the ground state to the next higher state is nearly

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Answer: (c)

Ionisation energy 13.6 eV means $E_1 = -13.6$ eV, $E_2 = -3.4$ eV.
Excitation energy $= E_2 - E_1 = -3.4 - (-13.6) = 10.2$ eV (energy supplied is positive).
So the answer is (c) $10.2$ eV.

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