Question

question 11
an example of a compound is
○ salt (nacl)
○ sodium (na)
○ chlorine (cl)
○ fluorine (f)
question 12

Explanation:

A compound is a substance made of two or more different elements chemically bonded. Salt (NaCl) has sodium (Na) and chlorine (Cl), so it's a compound. Sodium (Na), chlorine (Cl), and fluorine (F) are elements (single types of atoms), not compounds.

Answer:

A. Salt (NaCl)