Question

. The average oxidation number of iodine in I3

-1.​

Answer 1

Answer:

-1

Explanation:

The oxidation no. of I3 is -1, as oxidation number of alkali metal in the central I atom is in -1 oxidation state while the other 2 are in zero oxidation state. ... Central iodine has eight valence electrons (hence -1 charge) whereas terminal iodine atoms have seven valence electrons each.

Answer 2

The Oxidation number of iodine in I³⁻ is -1.

Explanation:

• I³⁻ is present in KI₃.
• KI₃ is actually formed between in K⁺ and I³⁻
• It has a negative charge on the iodine atom
• The Oxidation number of KI₃= +1 + (+3x)
• Oxidation number =+1/3
• Oxidation numbers cannot be fractional.
• In I³⁻ a coordinate bond is formed between I₂ and I⁻. Thus the oxidation number on two iodine is zero. and the O.no on the other Iodine is -1.
• Therefore the oxidation number of  I³⁻ is -1.