We’re being asked to determine if Si is molecular, metallic, ionic or covalent-network solid.
There are two main categories which are crystalline and amorphous solids. Crystalline solids are well ordered at the atomic level and amorphous solids are disordered. There are four types of crystalline solids:
Silicon is the fundamental component of integrated circuits. Si has the same structure as diamond.
Is Si a molecular, metallic, ionic, or covalent-network solid?