Iron forms 2 ions Fe2+ and Fe3+. Write the formulae of two oxides formed by these ions.
Answers
Answer:
Feo because it has 2 ions to be losed and oxygen wants 2 ions to attain noble gas configuration
and Fe2O3
Iron forms two ions Fe⁺² and Fe⁺³. The formulae of two oxides formed by these ions are FeO and Fe₂O₃.
- Iron forms two ions Fe⁺² and Fe⁺³ and the formula of their oxides can be formed by using the criss-cross method.
- The valency of oxygen is -2.
- Using the criss-cross method,
The formula of an oxide of Fe⁺² is
Fe O
+2 -2
Fe₂O₂
Fe₂O₂ in its simplest form can be written as FeO.
∴ The formula of an oxide of Fe⁺² is FeO.
The formula of an oxide of Fe⁺³ is
Fe O
+3 -2
Fe₂O₃
∴ The formula of an oxide of Fe⁺³ is Fe₂O₃.
Hence, iron forms two ions Fe⁺² and Fe⁺³. The formulae of two oxides formed by these ions are FeO and Fe₂O₃.