Question

What is wrong with the Lewis dot structure for $I{O}^{-}$?

• A. The bond between $I$ and $O$ should be represented with a single line
• B. The negative symbol should be on the inside of the brackets
• C. Oxygen is not satisfied according to the octet rule
• D. There are not enough electrons

Answer 1

Answer: (A)

The bond between $I$ and $O$ should be represented with a single line

In a Lewis dot structure, a single bond has to be drawn from the central atom to the other atom for each shared pair of electron

Net charge on the compound should always be outside the brackets

Number of electrons available with oxygen is 8 which satisfies oxygen according to the octet rule

Total number of electrons on $I{O}^{-}=7+6+1=6$ which is equal to that in the Lewis structure

Hence, A is the correct answer