alleryStart learning →What is the energy needed to break one mole of a particular covalent bond called?
AThe bond energy
BThe lattice energy
CThe ionisation energy
DThe activation energy
Answer & Solution
Correct answer: A. The bond energy
1. Bond strength is measured by how much energy it takes to pull the bonded atoms apart.
2. For one mole of a named covalent bond in gaseous molecules, that energy is the bond energy.
3. The stronger the bond, the larger this value becomes.
4. Lattice energy is the matching idea for ionic solids, and ionisation energy concerns removing electrons.
_Source: OpenStax Chemistry (CC BY 4.0), Ch 7 "Chemical Bonding and Molecular Geometry", section Bond Strength: Covalent Bonds_
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