Question

In which of the following, oxidation number of chlorine is +5 ?

• A. $Cl_2O_7$
• B. $ClO^-_3$
• C. $ClO^-$
• D. $ClO^-_4$

Answer 1

Answer: (B)

$ClO^-_3$

Answer 2

$CIO^-_3; x-6 =-1 \,or\,x=+5$