Chapter U1, Problem 10RE

Interpretation Introduction

Interpretation: The charge on transition metal ion needs to be explained.

 Concept introduction: An atom can lose or gain electrons in a chemical reaction. The loss of electron/s results in the formation of a positive charge on the atom. Generally, metals loss electron/s to form cations. Similarly, the gain of electron/s results in the formation of a negative charge on an atom. Generally, non-metals gain electron/s to from anions.

Answer to Problem 10RE

Transition metals loss electrons in a chemical reaction, and acquire the charge. The charge on the transition metal atom is equal to its oxidation state that varies from + 1 to + 7.

Explanation of Solution

Transition metals can lose outermost electrons to show different oxidation states. Some oxidation states are more common and stable. For example - Iron (Fe) shows + 2 to + 6 oxidation states but most common are + 2 and + 3. It can be written in brackets with Roman numbers like FeO, in which Fe has an oxidation state + 2, written as iron (II) oxide.

Thus, charge on the transition metal ion can be determined from the chemical formula of compound its form. The compound formed has overall charge of zero, from the known charge of anion in the formula, the charge of cation or transition metal ion can be determined by equating.