Q. Which of the following electronegativity order is incorrect?
A) Mg < Be < B < N
B) S < Cl < O < F
C) Al < Si < C < N
D) Al < Mg < B < N
Explanation
[Solution by Dr. Abubacker] Pauling values: Mg 1.31, Be 1.57, B 2.04, N 3.04 (order correct); S 2.58, Cl 3.16, O 3.44, F 3.98 (correct); Al 1.61, Si 1.90, C 2.55, N 3.04 (correct). In (4), Al (1.61) is more electronegative than Mg (1.31), so 'Al < Mg' is wrong. Answer (4).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.