JEE Main 2026 · 2 Apr · Shift 2 · Chemistry Q59

ChemistrySingle correct+4 / -1Question 59 of 75

Given below are two statements :

Statement I : The second ionization enthalpy of B, Al and Ga is in the order of B > Al > Ga.

Statement II : The correct order in terms of first ionization enthalpy is Si < Ge < Pb < Sn.

In the light of the above statements, choose the correct answer from the options given below :

Both Statement I and Statement II are true

Both Statement I and Statement II are false

Statement I is true but Statement II is false

Statement I is false but Statement II is true

Answer and worked solution

Official answer: B

Statement I. Second ionisation enthalpies are B 2427 > Ga 1979 > Al 1817 kJ mol⁻¹, so "B > Al > Ga" is false.

Statement II. First ionisation enthalpies are Si 786 > Ge 762 > Pb 716 > Sn 709, so "Si < Ge < Pb < Sn" is false.

(B)

Topics:Ionisation enthalpy Group 14

JEE Main 2026 · 2 Apr · Shift 2, Chemistry question 59