Which of the following compounds sublimes on heating?

H g C l_{2}

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A g N O_{3}

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Z n C l_{2}

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H g_{2} C l_{2}

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Solution

The correct option is A $H g C l_{2}$
Mercury ( $I$ ) chloride a colorless solid is also known as calomel and reacts with chlorine to give mercuric chloride.Mercury ( $I I$ ) is the most common oxidation state and forms four mercuric halides. They form tetrahedral complexes with other ligands and mercury ( $I I$ ) chloride is an easy sublimating white solid.

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