Radium, Ra, is at the bottom of Group 2.
Statement 1: Radium reacts vigorously with cold water to make hydrogen.
Statement 2: Radium chloride has the formula RaCl\mathrm{RaCl}RaCl.
Statement 3: A radium atom loses its outer electrons more easily than a calcium atom.
Statement 4: The solution formed when radium reacts with water has a pH below 7.
Which predictions are most likely to be correct?
1 and 3 only
1, 2 and 3 only
2 and 4 only
1, 3 and 4 only
60 exam-style questions on OCR GCSE Chemistry 4.1 Predicting chemical reactions, covering 4.1.1 Properties and trends in Groups 1, 7 and 0, 4.1.2 Properties of the transition metals, 4.1.3 Reactivity predicted from position in the Periodic Table, and 4.1.4 Reactivity of metals and the reactivity series. Each one has a worked solution and a mark scheme showing where the marks go.