Question

classify the solid state of the following substances as ionic crystals, covalent crystals, metallic crystals, or molecular crystals. C(graphite), Ar, Sn, MgO

Answer 1

C(graphite) - covalent crystals (Since carbon atoms atre covalently bonded to each other to form the structure of graphite)

Ar - molecular crystals (Since Argon atoms occupy the lattice sites in the solid crystal and the only attractions between the atoms are the London forces.)

Sn - metallic crystals (Since the crystal composed of the metal ions surrounded by electrons in a cloud that spreads throughout the entire solid)

MgO -  ionic crystals (Since the crystal is composed of magnesium and oxide ions)