Answer:
The correct answer is option D.
Explanation:
In the given compound [tex]2Al_2(CO_3)_3[/tex]
In one molecule of [tex]Al_2(CO3_)_3[/tex] there are 9 oxygen atoms.
Then total number of oxygen atoms in two molecules of aluminum carbonate will be:
[tex]9\times 2=18 atoms[/tex]
In one [tex]Al_2(CO_3)_3[/tex] there are 9 atoms, then 2 molecule of aluminum carbonate there will be 18 atoms.
