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What is the valence number of HCO3-.​
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What is the valence number of HCO3-.​

User Shizoman
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-1 is the answer

So it requires one cation (i.e. positively charged ion). So according to this, its valency is -1. A hydrogen carbonate ion has the formula HCO3-, so the valency of a hydrogen carbonate ion is -1.
User Galit
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