Question

Question 1

a)    Of the five major types of crystalline solids (atomic, molecular, network covalent, metallic, ionic) which does each of the following form and WHY?        (3)
      

Substance	Type of solid	REASON
Ni
F2
Xe

b)   Classify each of the following solids as metallic, network covalent, ionic, molecular or atomic. (3)
            i)    It melts below 100 ^o C and is insoluble in water. _____________________
            ii)   It conducts electricity only when melted. _____________________
            ii) Mostly insoluble in water and conducts electricity. _____________________

Answer 1