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Hery · Answer 1 · 2017-01-01T06:48:33+0000

(1) CaCO3 is your answer. The positive ion is
$\text{Ca}^{2+$ and the negative radical ion is
$\text{CO}_3^(-)$ . There exists covalent bonds between the carbon and oxygen atoms in the
$\text{CO}_3^(-)$ .

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