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NEET 1988 (AIPMT) · Energy of the Electron & Energy Levels

Energy of the Electron & Energy Levels question from NEET 1988 (AIPMT)

Q63NEET 1988 · AIPMTEasy

Energy of the Electron & Energy Levels

The ionisation energy of hydrogen atom is 13.6 eV, the ionisation energy of a singly ionised helium atom would be

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Answer: (d)

  1. Ionisation energy from ground state =13.6 Z2= 13.6\,Z^2 eV.
  2. He+^+ has Z=2Z = 2: 13.6×4=54.413.6 \times 4 = 54.4 eV
  3. So the answer is (d) 54.454.4 eV.
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