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ChemistryJEE Main 4 Apr 2026, Shift 2·Q7·MCQ·Easy

Classification & Periodicity · Successive ionisation enthalpy

The 1st^\mathrm{st} ionization enthalpy for Mg is +737+737 kJ/mol. The most probable estimated value of the 2nd^\mathrm{nd} ionization enthalpy of Mg is .
  1. (1)−906-906 kJ/mol
  2. (2)−856-856 kJ/mol
  3. (3)+1450+1450 kJ/mol
  4. (4)+590+590 kJ/mol

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