This compound doesn't exist.
The ionic compound formed between magnesium and chlorine has the formula MgCl2.
The name is francium oxide but this compound is not known today.
A formula for a compound formed between sodium cations and sulfate anions is Na2SO4.
The chemical formula for the compound formed between potassium and iodine is KI (potassium iodide).
The chemical formula for the compound formed between rubidium and oxygen is rubidium oxide - Rb2O.
The compound formed between rubidium and chlorine has the formula RbCl.
The compound formed between sodium and selenium is named "sodium selenide" and has the formula Na2Se.
The chemical formula for the compound formed by lithium and oxygen is Li2O, and is named lithium oxide.
The compound formed between aluminum and oxygen is called aluminum oxide. It has a formula of Al2O3.
the correct formula for ionic compound between calcium and chlorine is CaCl2
The formula would be K2Se
The chemical formula for the compound formed between iron(III) and iodine is FeI3 (iron(iii) iodide).
The ionic compound potassium bromide, with formula KBr.
The chemical formula of the compound formed between cobalt (III) and the bromide ion it would be CoBr3, if this compound exist !
The carbon tetrachloride formula is CCl4.
This formula is (CH3COO)3Fe.
Rubidium selenide has the formula Rb2Se.
Sulfate and barium both have a valence of 2, so that the compound formed between them has the formula BaSO4.
Mg3N2 Magnesium nitride
The chemical formula of aluminium phosphide is AlP.
The chemical formula for lithium bromide is LiBr.
The formula is Co3(PO4)2.
Chemical formula of magnesium bromide is MgBr2.