Chemistry

Question Analysis
This question involves matching a specific electronegativity difference value to the correct bond type. The main focus is on the ΔEN thresholds for classifying chemical bonds.

Key Concept Explanation
Bond type is determined by ΔEN:
ΔEN = 0: Nonpolar covalent (electrons are shared equally between identical atoms)
0 < ΔEN < 1.7: Polar covalent (unequal electron sharing)
ΔEN ≥ 1.7: Ionic (electron transfer from low-EN to high-EN atom)

Step-by-Step Solution
1. Recall the ΔEN ranges for each bond category.
2. Locate the category corresponding to ΔEN = 0.