Chemistry
Chemistry
Problem
has a net dipole moment while has zero dipole moment because : a. F is more electronegativity than oxygen b. Be is more electronegativity than oxygen c. molecule is linear and is bent d. molecule is linear and is bentIntuitive explanation
Water is bent, so its two O–H bond dipoles point in different directions and add up to create a net dipole. Beryllium difluoride is linear, meaning its two Be–F bond dipoles point in exactly opposite directions and cancel completely. The key insight: molecular geometry determines whether individual bond dipoles reinforce or cancel—it's not just about having polar bonds, but how they're arranged in space.
Intuitive explanation
Water is bent, so its two O–H bond dipoles point in different directions and add up to create a net dipole. Beryllium difluoride is linear, meaning its two Be–F bond dipoles point in exactly opposite directions and cancel completely. The key insight: molecular geometry determines whether individual bond dipoles reinforce or cancel—it's not just about having polar bonds, but how they're arranged in space.