The formula of a calcium ion is Ca2+\text{Ca}^{2+}Ca2+. The formula of a phosphate ion is PO43−\text{PO}_4^{3-}PO43−. What is the formula of calcium phosphate?
CaPO4\text{CaPO}_4CaPO4
Ca2(PO4)3\text{Ca}_2(\text{PO}_4)_3Ca2(PO4)3
Ca3(PO4)2\text{Ca}_3(\text{PO}_4)_2Ca3(PO4)2
Ca3PO4\text{Ca}_3\text{PO}_4Ca3PO4
74 exam-style questions on OCR GCSE Chemistry Bonding. Each one has a worked solution and a mark scheme showing where the marks go.