<u>Answer:</u> Four ionic compounds formed will be
<u>Explanation:</u>
Ionic compound is formed by the complete transfer of electrons from 1 atom to another atom. The cation is formed by the loss of electrons by metals and anions are formed by gain of electrons by non metals.
We are given:
Two cations having formulas
Two anions having formulas
By criss-cross method, the oxidation state of the ions gets exchanged and they form the subscripts of the other ions. This results in the formation of a neutral compound.
The four ionic compounds are:
- When iron ion and chloride ions combine, it results in the formation of compound. This is named as iron (II) chloride.
- When iron ion and oxide ions combine, it results in the formation of compound. This is named as iron (II) oxide.
- When chromium ion and chloride ions combine, it results in the formation of compound. This is named as chromium (IV) chloride.
- When chromium ion and oxide ions combine, it results in the formation of compound. This is named as chromium (IV) oxide.
Hence, the four ionic compounds formed will be