The Lewis structure of hydroperoxyl (HO2) is represented as follows:
H | O - O
In this structure, each oxygen atom is bonded to the hydrogen atom and to each other. The central idea of the Lewis structure is to represent the bonding between atoms and the arrangement of electrons within the molecule. Here, the first oxygen (the one connected to hydrogen) forms a single bond with hydrogen and a single bond with the second oxygen atom. The second oxygen, in turn, has two lone pairs of electrons, as each oxygen atom prefers to have a full octet of electrons.
Overall, this structure helps in visualizing how the atoms are connected as well as indicating the presence of lone pairs, which can be critical in determining the reactivity and properties of the molecule.