Answer:
Explanation:
The compound shown is:
[tex]3Al(PO_4)[/tex]
That means that there are 3 units of [tex]Al(PO_4)[/tex].
Each unit of [tex]Al(PO_4)[/tex]. contains:
- 1 atom of Al
- 1 atom of P
- 4 atoms of O: the subscript to the right of an element indicates the number of atoms in the formula
Thus, in total, there are 6 atoms in one unit of [tex]Al(PO_4)[/tex].
The coefficient in front of the chemical formula indicates the number of units. Thus, there are 3 units, each with 6 atoms, for a total of 3 × 6 = 18 atoms.
