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Complex(s) fotmed during the hydrometall...

Complex(s) fotmed during the hydrometallurgy of Ag ore is/are

A

`[Ag(CN)_2]^-`

B

`[Zn(CN)_4]^2-`

C

`[Ag(CN)_4]^(2-)`

D

both (1) and (2)

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