Question

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

• A. $a,b,c$
• B. $b,c$
• C. $c,a$
• D. $a,b$

Answer 1

Answer: (C)

$c,a$

Among the properties (a) reducing, (b) oxidizing, (c) complexing, the set of properties shown by $C{N}^{-}$ ion towards metal species is c, a
The $C{N}^{-}$ ion acts as ligand and reducing agent.
In $K_3\left[Fe\right(CN{)}_6]$ and $K_4\left[Fe\right(CN{)}_6]$, $C{N}^{-}$ ion acts as complexing agent.