WAEC - Chemistry (2000 - No. 5)
The type of chemical bond that exists between potassium and oxygen in potassium oxide is
ionic
metallic
covalent
dative
Vysvetlenie
Ionic bonding involves transfer of electron(s) from metals (potassium) to non-metals(Oxygen). Two atoms of K will combine with one atom of Oxygen to satisfy the electron transfer, thereby fulfilling the octet rule. Option A is the correct answer.