Of the five major types of crystalline solid, which does each of the following form?
(a) Sn :1.atomic 2. molecular 3.ionic 4.metallic 5.network covalent
(b) Si :1.atomic 2.molecular 3. ionic 4.metallic 5.network covalent
(c) KCl:1.atomic 2.molecular 3. ionic 4.metallic 5.network covalen