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Gold is extracted by making soluble cyan...

Gold is extracted by making soluble cyanide complex. The cyanide complex is

A

`[Au(CN)_4]^(-)`

B

`[Au(CN)_2]^(-)`

C

`[Au(CN)_3]^(-)`

D

`[Au(CN)]^(-)`

Text Solution

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The correct Answer is:
B
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