Question

How many chlorine (CI)atoms would be in 4 molecules of salt (4NaCI)?

Answer 1

there would be 4 atoms because the 16 at the beginning is only for the Na

Answer 2

In $NaCl$ there are 2 atoms, one of sodium, and one of chlorine. If we multiply it by 4, we'll have 8 atoms in total, 4 of soduim and 4 of chlorine.

Hope it helped,

BioTeacher101