Which of the following are molecules? a. al b. ag c. mgcl2 d. nacl e. c3h8

The correct options are (C)(D) and (E).

Explanation:

Molecules is defined as group of two or more numbers of atoms of same or different elements. For example: etc.

is a molecule made up of one magnesium and two chlorine atoms.

NaCl is molecule made up of one sodium and one chlorine atom

is molecule made up of three carbon atoms and eight hydrogen atoms.

Hence, the correct options are (C)(D) and (E).