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The bond between the sodium ion (Na+) and the bicarbonate ion (HCO3-) is ionic. The negative charge on bicarbonate ion is distributed between two oxygen atoms by resonance. The rest of the bonds within the bicarbonate ion (3 carbon-oxygen bonds and 1 oxygen-hydrogen bond) are covalent.

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13y ago
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Q: Which bonds are ionic and covalent in NaHCO3?
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