Chemistry

Question Analysis
This question involves comparing bond polarity by calculating electronegativity differences (ΔEN) between chlorine and four Period 3 elements. The main focus is on applying period electronegativity trends to predict ΔEN values.

Key Concept Explanation
Bond polarity depends on the electronegativity difference (ΔEN); a smaller ΔEN results in a less polar bond.
Electronegativity increases across Period 3, so elements closer to Cl (Group 17) have smaller ΔEN with Cl.

Step-by-Step Solution
1. Recall electronegativity values for Period 3 elements and Cl: Al = 1.61, Si = 1.90, P = 2.19, S = 2.58, Cl = 3.16
2. Calculate ΔEN for each bond:
P–Cl: |2.19 - 3.16| ...