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28 March, 10:12

To name the compound written as CuCl2, you would write:

O

A. Copper chloride.

O

B. Chromium (II) chloride.

O

O

C. Copper (II) chloride.

D. Copper fluoride.

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  1. 28 March, 12:33
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    Answer: option C. Copper (II) chloride

    Explanation:

    To name CuCl2, we need to know the oxidation state of Cu in the compound as chlorine always have oxidation on - 1 in all its compound. The oxidation state of Cu can be calculated as follows:

    Cu + 2Cl = 0 (since the compound has no charge)

    Cl = - 1

    Cu + 2 (-1) = 0

    Cu - 2 = 0

    Collect like terms

    Cu = 0 + 2

    Cu = + 2

    Therefore, the oxidation state of Cu in CuCl2 is + 2.

    The name of the compound will be copper (ii) chloride, since cupper has oxidation state + 2 in the compound.
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