1.

In the equation 4M+8CN^(-)+2H_(2)O+O_(2)rarr 4[M(CN_(2))]^(-)+4OH^(-) The metal M is

Answer»

Copper
Iron
Gold
Zinc

Solution :`4Au+8KCN+2H_(2)O+O_(2)rarrKunderset("complex)")underset("(Soluble")([Au(CN)_(2)])+4KOH`


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