Answer: The correct answer is Option d.
Explanation:
We are given an ionic compound named as iron (III) carbonate.
Iron is the 26th element of periodic table having electronic configuration of [tex][Ar]3d^64s^2[/tex].
This element will loose 3 electrons to form [tex]Fe^{3+}[/tex] ion.
Carbonate ion is a polyatomic ion having chemical formula of [tex]CO_3^{2-}[/tex]
By criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound.
So, the chemical formula for the given compound is [tex]Fe_2(CO_3)_3[/tex]
Thus, the correct answer is Option d.
