Without using any tabulated bond energies, calculate the average C−Cl bond energy from the following data: the heat of atomization of CH₄ is 1660 kJ/mol and that of CH₂Cl₂ is 1495 kJ/mol.
a. 340 kJ/mol
b. 375 kJ/mol
c. 410 kJ/mol
d. 455 kJ/mol