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9.5     Specify the oxidation numbers of the metals in the following coordination entities:

               (ii) [CoBr_{2}(en)_{2}]^{+}

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Let us assume that the coordination number of cobalt is x.

Then according to the question :

                                                 x\ + 2(-1)\ +\ 2(0)\ =\ 1

Hence the coordination number of cobalt is 3.

Posted by

Devendra Khairwa

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