`CH_(4)rarrC_((g))+4H_((g))" , " Delta H_("Dissociateion")`
or `H-overset(H)overset(|)underset(H)underset(|)(C )-Hrarr C_((g))+4H_((g)) " , " Delta H_("Dissociation")`
`because` Bond energy of mole `C-H=Delta H_("dissociation")`
`therefore` Bond energy of 1 mole C - H bond `=(Delta H_("Dissociation"))/(4)`