Chemistry

Question Analysis
This question involves arranging chemical bonds in the order of increasing polarity by calculating electronegativity differences (ΔEN). The main focus is on linking ΔEN magnitude to bond polarity and applying periodic trends for electronegativity.

Key Concept Explanation
Bond polarity increases as the electronegativity difference (ΔEN) between bonded atoms increases. Nonpolar bonds have ΔEN = 0, polar covalent bonds have small to moderate ΔEN, and ionic bonds have large ΔEN.

Step-by-Step Solution
1. Recall electronegativity values: Br = 2.96, S = 2.58, Cl = 3.16, K = 0.82, F = 4.0
2. Calculate ΔEN for each bond:
Br–Br: |2.96 – 2.96| = 0 (nonpolar covalent)
S–Cl: |2.58 – 3.16| = 0.58 (polar covalent)
K–F: ...