What is the formula of sodium sulphate? Chemistry Ionic Bonds Writing Ionic Formulas 1 Answer anor277 Sep 29, 2016 #Na_2SO_4# Explanation: This was known historically as #"Glauber's salt"#, and is important today as a commodity chemical in detergent and paper processing. 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 6576 views around the world You can reuse this answer Creative Commons License