A formula unit of zinc carbonate contains

One zinc, two carbon, and three oxygen atoms

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Two zinc, two carbon, and two oxygen atoms

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One zinc, one carbon, and three oxygen atoms

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Two zinc, one carbon, and two oxygen atoms

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Solution

The correct option is C One zinc, one carbon, and three oxygen atoms
Zinc carbonate contains zinc (Zn ) ions and carbonate (CO) ions. The valency of both ions is 2.

The formula of zinc carbonate is ZnCO $_{3}$

Thus, a formula unit of zinc contains one zinc, one carbon, and three oxygen atoms.

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