https://doi.org/10.1351/goldbook.B00701
The average value of the gas-phase @[email protected] (usually at a temperature of \(298\ \text{K}\)) for all @[email protected] of the same type within the same @[email protected] The mean bond energy for methane, for example, is one-fourth the @[email protected] of reaction for:
B00701.png
Tabulated bond energies are generally values of bond energies averaged over a number of selected typical chemical species containing that type of bond.