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An element, Z froms an anion whose formula is [Z(CN)6

An element, Z froms an anion whose formula is [Z(CN)6]y. If Z has an oxidation number of +2, what is the value of y?

A.

- 2

B.

- 3

C.

- 4

D.

- 5

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Correct answer is C

No explanation has been provided for this answer.

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