Medium
In the equation,the metal $M$ is:
$4M + 8CN^- + 2H_2O + O_2 \xrightarrow{} 4[M(CN)_2]^- + 4OH^-$
$4M + 8CN^- + 2H_2O + O_2 \xrightarrow{} 4[M(CN)_2]^- + 4OH^-$
- ACopper
- BIron
- CGold
- DZinc
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