Question

What type of solid will each of the following substances form?

I₂
a. atomic
b. covalent network
c. ionic
d. metallic
e. molecular

Answer 1

Substance A is a metallic solid, Substance B is an ionic solid, Substance C is a covalent network solid, and Substance D is a molecular solid.

Step-by-step explanation:

For the given substances:

Substance A is malleable, ductile, conducts electricity well, and has a melting point of 1135 °C. This indicates that Substance A is a metallic solid.

Substance B is brittle, does not conduct electricity as a solid but does when molten, and has a melting point of 2072 °C. These properties suggest that Substance B is an ionic solid.

Substance C is very hard, does not conduct electricity, and has a melting point of 3440 °C. These characteristics make Substance C a covalent network solid.

Substance D is soft, does not conduct electricity, and has a melting point of 185 °C. These properties align with those of a molecular solid.