Which of the following are molecular solids and which are covalent solids? SO2, I2, P4, S8, H2O, SiO2

Answer;

1) Moleculer solids; I2, S8 and P4 2) Covalent solids; SiO2; 3) Moleculer liquid; H2O 4) Moleculer gas; SO2

Explanation:

In Moleculer compounds the molecules are held together by intermoleculer forces such as van der waals forces and dipole-dipole interaction. They have weak melting and boiling point.

Covelent compounds are held together by covalent bond. They have strong melting and boiling point.

since electrons are negative the answer is neagtaive

the transfer of heat by electromagnetic radiation is called thermal radiation . it is usually carried out by electromagnetic waves in an energy range just below the visible spectrum, which is the infrared range.

so the answer would be radiation.

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