Which one of the following molecules contains both ionic and covalent bonds?

C H_{2} C l_{2}

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K_{2} S O_{4}

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B e C l_{2}

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S O_{2}

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Solution

The correct option is A $K_{2} S O_{4}$
Only in $K_{2} S O_{4}$ , there are ionic as well as covalent bonds. The $K^{+}$ and $S O_{4}^{2 -}$ ions are attracted by electrostatic forces. Sulfur atom has covalent bonds in sulfate ion.

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