Question #84c98 Chemistry Ionic Bonds Writing Ionic Formulas 1 Answer Luke H. · Stefan V. Aug 24, 2017 #2# Explanation: The formula unit of calcium bicarbonate is #"Ca"("HCO"_3)_2#. This means that there are #2# bicarbonate ions. Since there is #1# carbon atom per bicarbonate ion, there are #1 xx 2 = 2# carbon atoms per formula unit. Answer link Related questions How do you write ionic formulas for binary compounds? What is the ionic formula for calcium chloride? What is the ionic formula for calcium oxide? What is the ionic formula for lithium oxide? How do you write the formula for ionic compounds? How do I write #Sn(NO_3)_2# in Ionic formula? What is the empirical formula for an ionic compound? What is the molecular formula for chorate? Question #7086b Why are polyatomic ions covalent? See all questions in Writing Ionic Formulas Impact of this question 1723 views around the world You can reuse this answer Creative Commons License