Question

Which one of the following has the highest oxidation number of iodine.

• A. $KI_{3}$
• B. $KI$
• C. $IF_{5}$
• D. $KIO_{4}$

Answer 1

Answer: (D)

$KIO_{4}$

Answer 2

$\overset{*}{KIO_{4}}$

$1 + x - 2 \times 4 = 0$; $x = 8 - 1 = + 7$.