structure of this compound.?

Question

I wanted to know the orbital structure of potassium superoxide.
How is this compound possible?
Do any compounds have a negative or positive charge?

Answer 1

Potassium superoxide has the formula KO2.
Superoxide is the anion [O2]−. With one unpaired electron, the superoxide ion is a free radical and therefore paramagnetic.
The two oxygens are connected by a single bond (one pair of electrons). One oxygen has three lone pairs (giving it a negative charge) and the other has two lone pairs and one unpaired electron. A diagram of the Lewis structure for superoxide is shown in the link below.

Compounds cannot have an overall charge. A chemical species with an overall charge is an ion. Ions of opposite charge combine in fixed proportions to form neutral compounds.

Answer 2

Magnesium, calcium, strontium, and barium oxides adopt a rock-salt structure, in which the oxide ions form a face-centered cubic array and the metal ions fill the octahedral holes. Lithium, sodium, and potassium oxides, in contrast, adopt the antifluorite structure. In this type of structure, the oxide ions form a face-centered cubic array and the metal ions fill half the tetrahedral holes. This is considered to be the inverse of the fluorite structure, where the cations form the face-centered cubic array and the anions fit into the tetrahedral holes.