A molecule of carbon tetrachloride contains one carbon and four chlorine atoms.
Thus, a carbon atom will share each of its 4 outer electrons with a single chlorine atom, giving the single carbon atoms and 4 chlorine atoms a full outer shell of electrons.
So 6.02 ×10²³ (that is equal to one mole) , molecules contain 4×6.02×10²³ atoms of chlorine i.e. 4moles chlorine. So we can write one mole of ccl4 molecule have 4 moles of chlorine atom
