The chemical formula of carbonate anion is (CO3)2-.
The chemical formula of magnesium cation is Mg2+.
The formula and charge of the nitrate ion is NO3-, and the formula and charge of the magnesium ion is Mg2+. Together they make magnesium nitrate, Mg(NO3)2.
hydrogen carbonate (aka bicarbonate) is the polyatomic ion you're looking for. Mg(HCO3)2 Mg2+ (HCO3)-
Formula for magnesium hydrogen carbonate is Mg(HCO3)2.
Mg(OH)2
The ionic charge on "Mg2", presumably meaning the cation whose formula is Mg+2, is +2. In the unlikely event that "Mg2" means a diatomic molecule of elemental magnesium, the ionic charge would be 0,
The formula and charge for the hydroxide ion is OH-, and the formula and charge for the magnesium ion is Mg2+. Together they make magnesium hydroxide, Mg(OH)2.
Here exist: 1 ion Mg+ and ion (CO3)-.
The formula and charge of the nitrate ion is NO3-, and the formula and charge of the magnesium ion is Mg2+. Together they make magnesium nitrate, Mg(NO3)2.
Chloride ions have a charge of 1-. Since the charge on an Mg ion is 2+, the formula unit of Magnesium Chloride is MgCl2. There are 2 chloride ions for each Mg ion.
Formula for magnesium hydrogen carbonate is Mg(HCO3)2.
The chemical formula of magnesium carbonate is Mg(CO3)2; this molecule contain one ion of magnesium and two ions of carbonate.
hydrogen carbonate (aka bicarbonate) is the polyatomic ion you're looking for. Mg(HCO3)2 Mg2+ (HCO3)-
+2
You break it up into magnesium(Mg) and nitrate(NO3). They are ions with the charges Mg2+ and (NO3 )1- . To make the formula, their charges must be balanced at 0. Therefore, the formula is Mg(NO3)2
Formula for magnesium hydrogen carbonate is Mg(HCO3)2.
It depends if it the ion of magnesium, if it is the ion, then it is positive. If not, then it is neutral.
Mg2+