185 Activity 15 7. Hydrogen peroxide (H,O,) is a reactive molecule, often used as an antiseptic and sometimes used for bleaching. Draw a Lewis structure for hydrogen peroxide. Calculate the oxidation number of oxygen in hydrogen peroxide and suggest a reason for its reactivity. 8. Use of an atomic orbital approach to bonding without adding modifications for electron promotion and hybridization leads to the naive conclusion that carbon atoms should combine with hydrogen atoms to give CH2. Draw a Lewis structure for this result. CH, (usually called methylene or carbene) actually can be made as a transient species and plays a very important role in synthetic organic chemistry. It has been described as one of the most indiscriminate reagents in organic chemistry. For example, it reacts with ethylene (C₂H) to give cyclopropane (C,H). Show this reaction using Lewis structures for reactants and products and suggest a reason for the very high reactivity of methylene.