Question

Among the properties (A) reducing (B) oxidizing (C) complexing, the set of properties shown by $C{N}^{-}$ ion towards metal species is:

• A. A, B
• B. B, C
• C. C, A
• D. A, B, C

Answer 1

The correct option is C C, A

$C{N}^{-}$ acts as reducing agent as well as complexing agent.

Example:

$2C{u}^{+2}+10C{N}^{-}\to 2\left[Cu\right(CN{)}_4{]}^{+3}+C{N}_2$

+2 +1

Here it reduces copper and forms a complex with it.