The chemical formula of carbonate anion is (CO3)2-.
The chemical formula of magnesium cation is Mg2+.
The formula for carbonate is CO3^2-, and it has a charge of -2 due to the -2 charge on each oxygen atom. The formula for magnesium ion is Mg^2+, which has a charge of +2 due to the loss of two electrons.
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)-
Mg(OH)2
The symbol for a magnesium ion is Mg^2+. The superscript 2+ indicates that the magnesium ion has a positive charge of 2.
The formula for carbonate is CO3^2-, and it has a charge of -2 due to the -2 charge on each oxygen atom. The formula for magnesium ion is Mg^2+, which has a charge of +2 due to the loss of two electrons.
Here exist: 1 ion Mg+ and ion (CO3)-.
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.
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.
Magnesium carbonate (MgCO3) is composed of one magnesium (Mg) atom and one carbonate (CO3) ion.
The chemical formula of magnesium carbonate is Mg(CO3)2; this molecule contain one ion of magnesium and two ions of carbonate.
Formula for magnesium hydrogen carbonate is Mg(HCO3)2.
hydrogen carbonate (aka bicarbonate) is the polyatomic ion you're looking for. Mg(HCO3)2 Mg2+ (HCO3)-
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.
+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
Mg(OH)2