All of these radicals have a valency of 2, except :

{S O}_{4}

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{C O}_{3}

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{N H}_{4}

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M g

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Solution

The correct option is C ${N H}_{4}$
${N H}_{4}$ has a valency of $1.$ Rest others have valency of $2.$

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Similar questions

S O_{4}

C O_{3}

O H

C r_{2} O_{7}

Which of these is a polyatomic ion?

${S O}_{4}^{- 2}$ , ${N O}_{3}^{- 1}$ , ${C O}_{3}^{- 2}$

Which of these is a polyatomic ion?

${S O}_{4}^{2 -}$ , ${N O}_{3}^{-}$ , ${C O}_{3}^{2 -}$

K C N, K_{2} {S O}_{4}, ({N H}_{4})_{2} C_{2} O_{4}, N a C l, Z n ({N O}_{3})_{2}, F e {C l}_{3}, K_{2} {C O}_{3}, {N H}_{4} {N O}_{3}, L i C N

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