Chemistry

Question Analysis
This question involves multi-bond polarity ranking and identifying the bond with the minimum ΔEN. The main focus is on recognizing homonuclear bonds as the least polar (ΔEN = 0) among a set of mixed bonds.

Key Concept Explanation
Bond polarity is directly proportional to ΔEN. Homonuclear bonds (between identical atoms, e.g., Cl–Cl) have a ΔEN of 0, making them nonpolar and the least polar possible.
For the other bonds (Si–Cl, P–Cl, S–Cl), ΔEN decreases as the bonded atom’s electronegativity approaches Cl’s value (3.16), but none are as low as 0.

Step-by-Step Solution
1. Identify the homonuclear bond in the set: Cl–Cl.
2. Calculate ΔEN for Cl–Cl: ...