NiCO3
With the 2 oxidation state. NiCO3
There is no compound by the name nickel(I) carbonate. Nickel(II) carbonate is however NiCO3
The formula name of Ni2(CO3)2 is nickel(II) carbonate.
A carbon carbonate don't exist. Thew ion carbonate is CO3-; a metal carbonate has the chemical formula MeCO3.
CaCO3CaCO3-----Ca+2-calciumCO3-2--carbonate
The chemical formula for gold carbonate is Au2(CO3)2.
The chemical formula of carbonate anion is (CO3)2-.The chemical formula of magnesium cation is Mg2+.
The chemical formula for nickel hypochlorite is Ni(ClO).
Ni(HCO3)2 Ni has a +2 charge and bicarbonate aka hydrogen carbonate HCO3 has a -1 charge.
Calcium ion is Ca2+ and the carbonate ion is CO32-
The chemical formula of radium carbonate is RaCO3.
The chemical formula for nickel (II) permanganate is Ni(MnO4)2.