bomb-digestion in spectrochemical analysis , 174 bond, 174 bond dissociation, 174 bond energy in theoretical chemistry , 175 bond energy (mean bond energy), 175 bond length, 175 bond number, 175 bond orbital, 176 bond order, 176 bond order , 176 bond-dissociation energy, , 177 bond-dissociation energy (BDE) in theoretical chemistry, 177 bond-energy-bond-order method, 177 bonded phase in chromatography , 177 bonding molecular orbital, 178 bonding number, 178 boranes, 178 boranylidenes, 178 borderline mechanism, 178 borenes, 179 borinic acids, 179 Born–Oppenheimer (BO) approximation, 179 boronic acids, 179 borylenes, 179 boson, 180 bound fraction in radioanalytical chemistry , 180 boundary layer in atmospheric chemistry , 180 bowsprit (flagpole), 180 branch point in polymers , 181 branch (side chain, pendant chain) in polymers , 181 branch unit in polymers , 181 branched chain in polymers , 181 branched polymer in polymers, 182 branching chain reaction, 182 branching decay, 182 branching fraction, 182 branching index in polymers , 182 branching plane, 183 branching ratio, 183 break of a foam , 184