isomerism e Stereoisomers CHaCHECHOH OH with same bonding C=C attachments of atoms CH 3 OH CH but different Hac spatial orientations CH3 CH3 OIsomerism Stereoisomers ---- with same bonding attachments of atoms but different spatial orientations CH3 H H H O H H CH3 H O C C H OH H CH3 C C OH H H CH3 O H3C CH3CH=CHOH