The 1st ionization enthalpy for Mg is +737 kJ/mol. The most probable estimated value of the 2nd ionization enthalpy of Mg is ________.
← JEE Main 2026 · 4 Apr · Shift 2
ChemistrySingle correct+4 / -1Question 57 of 75
JEE Main 2026 · 4 Apr · Shift 2, Chemistry question 57
Answer and worked solution
Official answer: C
Second ionisation enthalpy. It is always positive and larger than the first. For Mg it is about twice the first, roughly +1450 kJ/mol (actual 1451).
(C)
Topics:Ionisation enthalpy