Oxidation number of iodine in IO3−​,IO4−​,KI and I2​ respectively are____________.

A

−1,−1,0,+1

B

+3,+5,+7,0

C

+5,+7,−1,0

D

−1,−5,−1,0

E

−2,−5,−1,0

Oxidation number of oxygen is−2andKis+1.InIO3−​,oxidation number of iodine is(x+3(−2)=−1,x=+5)+5.
InIO4−​,oxidation number of iodine is(x+4(−2)=−1,x=+7)+7.
InKI,oxidation number of iodine is(1+x=0,x=−1)−1.
InI2​,oxidation number of iodine is0.