Discussion Forum



1)

 What is the oxidation number of gold in the complex [AuCl4]1- ?


A) +4

B) +3

C) +2

D) +1

Answer:

Option B

Explanation:

 Let x be the oxidation number of gold (Au) in the complex [AuCl4]-1

 $\therefore$     x+4(-1)=-1

 $\Rightarrow$    x=-1+4

 $\Rightarrow$    x= +3

Hence, the oxidation number of gold is +3