The oxidation state of chromium in each given compound is to be determined. Concept information: The oxidation state of a substance is defined as the transfer of electrons in a chemical compound. It can either be zero, positive or negative. An atom which gains electron has a negative value of oxidation state and atom which loses has a positive oxidation state. The oxidation state of an atom in Free State is zero. The oxidation state of a monatomic ion is equal to the charge on the ion. In the compounds, the overall oxidation state of a neutral atom is zero. Each group possess a particular oxidation state. The oxidation state of group I is + 1 , group II is + 2 , group 5A is − 3 , group 6A is − 2 and group 7A is − 1 .

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Chapter 16, Problem 50E

Interpretation Introduction

Interpretation:

The oxidation state of chromium in each given compound is to be determined.

Concept information:

The oxidation state of a substance is defined as the transfer of electrons in a chemical compound. It can either be zero, positive or negative. An atom which gains electron has a negative value of oxidation state and atom which loses has a positive oxidation state.

The oxidation state of an atom in Free State is zero.

The oxidation state of a monatomic ion is equal to the charge on the ion.

In the compounds, the overall oxidation state of a neutral atom is zero.

Each group possess a particular oxidation state. The oxidation state of group I is +1, group II is +2, group 5A is −3, group 6A is −2 and group 7A is −1.

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