Intermolecular forces, and other properties of varying molecules?

Question

I was given the following question:

a) carbon tetrachloride (CCl4)
b) glycerol (C3H5OH3)
c) ethene (C2H4)
d) ethyne (C2H2)
e) quartz (SiO2)
f) diamond (C)
g) Na
h) KI
i) CsF
j) He

Which of the above:
(i) exhibits only van der Waals forces?
(ii) cleaves into definites cleavage planes when the solid crystal is distorted?
(iii) is a nonpolar molecular substance?
(iv) conducts electricity at room temperature in solid state?
(v) exhibits hydrogen bonding?
(vi) conducts electricity when melted?
(vii) is a network solid?

I am having difficulties with this question, so I would appreciate if anyone could explain the answers and the reasons.

Thank you!

Answer 1

(i) exhibits only van der Waals forces?
a, c, d, j
(ii) cleaves into definites cleavage planes when the solid crystal is distorted?
??
(iii) is a nonpolar molecular substance?
a, c, d, j
(iv) conducts electricity at room temperature in solid state?
g
(v) exhibits hydrogen bonding?
b
(vi) conducts electricity when melted?
h and i
(vii) is a network solid?
e and f