Copper has an oxidation number of what in CuBr?

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Multiple Choice

Copper has an oxidation number of what in CuBr?

In this compound, the oxidation state is found by balancing charges in a neutral molecule. Bromine almost always carries -1. Let the oxidation state of copper be x. Then x + (-1) = 0, so x = +1. Therefore copper is in the +1 oxidation state in CuBr. The +2 state would occur in copper(II) bromide, CuBr2, where two bromides balance a +2 copper.

In this compound, the oxidation state is found by balancing charges in a neutral molecule. Bromine almost always carries -1. Let the oxidation state of copper be x. Then x + (-1) = 0, so x = +1. Therefore copper is in the +1 oxidation state in CuBr. The +2 state would occur in copper(II) bromide, CuBr2, where two bromides balance a +2 copper.

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