This compound doesn't exist.
The compound formed between potassium and the chlorate ion is potassium chlorate, which has the chemical formula KClO3.
The formula for the ionic compound formed between magnesium and chlorine is MgCl2. Magnesium, with a 2+ charge, forms an ion while chlorine, with a 1- charge, forms one ion, resulting in a 1:2 ratio in the compound.
The ionic compound formed between Al and P is aluminum phosphate, with the formula AlPO₄. This compound is formed by the transfer of electrons from aluminum to phosphorus atoms, resulting in the formation of Al³⁺ cations and PO₄³⁻ anions.
When francium and oxygen react, francium oxide is formed. This compound is highly reactive and unstable due to francium's extreme reactivity. Francium is a highly radioactive element and is extremely rare in nature.
Sodium and fluorine will form an ionic compound named sodium fluoride with the formula NaF.
The formula for the compound formed between ammonium (NH4+) and chromate (CrO4^2-) is (NH4)2CrO4.
The compound formed between beryllium and phosphorus is beryllium phosphide. Its chemical formula is Be3P2.
The chemical formula for the compound formed between potassium and chlorine is KCl, which is potassium chloride.
The compound formed between potassium and bromine is potassium bromide, with the chemical formula KBr.
The compound formed between potassium and the chlorate ion is potassium chlorate, which has the chemical formula KClO3.
The compound formed between iron and selenium is iron(II) selenide, with the chemical formula FeSe.
The chemical formula for the compound formed between iron(III) and iodine is FeI3 (iron(iii) iodide).
The chemical formula for the compound formed between potassium and oxygen is K2O.
The compound formed between chromium(VI) and chlorine is chromium(VI) chloride, with the chemical formula CrCl6.
That would be chromium(IV) selenide with the formula CrSe2
The chemical formula for the compound formed between rubidium and oxygen is rubidium oxide - Rb2O.
The chemical formula of the compound formed between cobalt (III) and the bromide ion it would be CoBr3, if this compound exist !