0 in elemental form, +2 in its compounds.
The oxidation number of Calcium (Ca) is +2
Calcium is a element. Nitrate is a ion. Calcium shows +2.
The only oxidation number is 2+.
This compound is insoluble in water. Calcium generally shows +2 oxidation number.
+2
Oxidation number is plus two. It is common to every ion of Ca.
Cacium has 20 electrons in a atom. Oxidation number of it is +2.
The sum of the oxidation numbers is zero for the compound.
+2 for Ca in its compounds
It has two numbers.They are plus two and zero.
The oxidation state of calcium is +2.
The actual chemical formula for calcium nitride is Ca3N2 and not CaN2. The oxidation numbers are +2 for each calcium and -3 for each nitrogen (as it is nitride ion)