Nickel has four oxidation states: Ni(I), Ni(II), Ni(III), and Ni(IV).
Selenium is a group 6 non-metal...so it's oxidation state is -2.
Therefore, you can have four possible formulas for nickel selenide:
Ni2Se, NiSe, Ni2Se3, and NiSe2.
However, the three most commonly found are:
NiSe, Ni2Se3, and NiSe2.
The chemical formula for nickel(II) selenide is NiSe.
Formula: NiSe
NiSe
titanium (II) selenide = SeTi
Nickel(II)Selenide
The formula for cobalt(II) selenide is CoSe. It is composed of one cobalt ion (Co^2+) and one selenide ion (Se^2-).
The chemical formula for vanadium selenide is VSe.
The formula for nickel(II) borate is NiB2O4.
titanium (II) selenide = SeTi
Nickel(II)Selenide
The formula for titanium(II) selenide is TiSe.
The formula for cobalt(II) selenide is CoSe. It is composed of one cobalt ion (Co^2+) and one selenide ion (Se^2-).
The chemical formula for vanadium selenide is VSe.
The formula for nickel(II) iodide is NiI2.
The formula for nickel(II) borate is NiB2O4.
The formula for nickel(II) fluoride is NiF2.
The chemical formula for nickel(II) chloride is NiCl2.
The chemical formula of nickel(II) nitride is Ni3N2.
The formula for nickel(II) arsenate is Ni3(AsO4)2.
Ni(ClO3)2