Final answer:
All peroxides and hydroperoxides share a common structural feature: an oxygen-oxygen single bond known as a peroxide group. This weak bond leads to increased reactivity in peroxides.
Step-by-step explanation:
The structural feature common to all peroxides and hydroperoxides is the presence of an oxygen-oxygen bond, known as the peroxide group. In peroxides, this is denoted as a single bond between two oxygen atoms (R-O-O-R'), whereas in hydroperoxides it is found within the hydroperoxy group (R-O-O-H).
This O-O bond is relatively weak with a bond dissociation energy of about 200 kJ/mol, making peroxides more reactive. Metal peroxides, such as those formed by group 1 and 2 elements, contain peroxide ions (O22-) with these oxygen-oxygen covalent single bonds.
All peroxides share a common structural feature, which is the presence of the peroxide functional group (-O-O-). This functional group consists of two oxygen atoms bonded together by a single bond.
Examples of peroxides include hydrogen peroxide (H2O2) and organic peroxides such as tert-butyl hydroperoxide (t-BuOOH).
These compounds are characterized by the weak O-O bond, which makes peroxides more reactive compared to other types of compounds.