What is the sum of the oxidation number of cobalt in [Co(H2O)(CN)(en)2 – McqOptions

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1.	What is the sum of the oxidation number of cobalt in [Co(H₂O)(CN)(en)₂]²⁺and [CoBr₂(en)₂]⁺?
A.	+3
B.	+4
C.	+5
D.	+6
Answer» E.

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