Carbon-hydrogen bonds exhibit a range of different chemical reactivity that depends on molecular structure. Classify the C-H bonds at the carbons labeled a-c in the structure below. Possible classifications are: primary, secondary, & tertiary or none if there are no hydrogens at the labeled carbon. C b &. C-H bond(s) at a C-H bond(s) at b C-H bond(s) at d These formulas represent the same molecule viewed from different angles.