D-And F-Block Elements Ques 124
Question: In the equation $ 4M+8C{{N}^{-}}+2H_2O+O_2\xrightarrow{{}}4{{
[M(CN_2)]}^{-}}+4O{{H}^{-}} $ The metal M is [MP PET 2000]
Options:
A) Copper
B) Iron
C) Gold
D) Zinc
Show Answer
Answer:
Correct Answer: C
Solution:
$ 4Au,+,8KCN,+,2H_2O,+,O_2\to \underset{\begin{smallmatrix} (Solube \\ \text{comple x}) \end{smallmatrix}}{\mathop{4K[Au,{{(CN)}_2}]}},+4KOH $
