The chemical name of the compound is [[1]]

A compound's chemical composition is symbolically represented by its chemical formula. Chemical formulas reveal the elements that make up a compound's molecules as well as the ratio in which their atoms combine to create those molecules.

For naming a compound, we should know the cations and anions present. Here two potassium ions act as cations. And zinc and oxygen as a whole act as an anion called zincate.

Zincate is prepared from zinc oxide and alkali metal salt solutions. Zincate is a polyatomic anion in which Zn is the central atom. Thus the name of the compound is potassium zincate with chemical formulae  ${\mathrm{K}}_2{\mathrm{ZnO}}_2$.