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ChemistryJEE Main 2 Apr 2026, Shift 1·Q2·MCQ·Easy–moderate

Structure of Atom · Ionisation energy hydrogen-like ions

What is the energy (in J atom−1^{-1}) required for the following process ?

LiX2+(g)→LiX3+(g)+eX−\ce{Li^2+(g) -> Li^3+(g) + e-}

(Take the ionization energy for the H atom in the ground state as 2.18×10−182.18\times10^{-18} J atom−1^{-1})

  1. (1)8.72×10−188.72\times10^{-18}
  2. (2)1.962×10−181.962\times10^{-18}
  3. (3)1.962×10−171.962\times10^{-17}
  4. (4)6.54×10−176.54\times10^{-17}

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See the full 2 Apr 2026, Shift 1 paper