Question

choose the best answer. two elements have an electronegativity difference of 0.9. which type of bond will form between them? polar covalent ionic nonpolar covalent

Explanation:

Bond type is determined by electronegativity difference (ΔEN):

• Nonpolar covalent: ΔEN < 0.5
• Polar covalent: 0.5 ≤ ΔEN < 1.7
• Ionic: ΔEN ≥ 1.7

A ΔEN of 0.9 falls in the polar covalent range.

Answer:

polar covalent