Answer
See explanation
Work Step by Step
The difference in bond energy between CH₄ and CHBr₃ can be attributed to the difference in electronegativity between carbon and bromine. Bromine is more electronegative than carbon, so the C-Br bond is more polar than the C-H bond. The greater polarity in the C-Br bond results in stronger dipole-dipole interactions (van der Waals forces) between CHBr₃ molecules, leading to a slightly weaker bond.
