Question

which of the following does not correctly pair the polyatomic ion with its formula? select the correct answer below: o cyanide, cn⁺ o bromate, bro₃⁻ o chlorate, clo₃⁻ o hydroxide, oh⁻

Explanation:

Step1: Recall cyanide ion formula

The cyanide ion has a formula of $CN^{-}$, not $CN^{+}$.

Step2: Check bromate ion

The bromate ion is correctly represented as $BrO_{3}^{-}$.

Step3: Check chlorate ion

The chlorate ion is correctly represented as $ClO_{3}^{-}$.

Step4: Check hydroxide ion

The hydroxide ion is correctly represented as $OH^{-}$.

Answer:

A. cyanide, $CN^{+}$