Which statement is correct about the Group 2 elements and their compounds?
The first ionisation energy of magnesium is lower than the first ionisation energy of calcium.
The solubility of barium hydroxide in water is lower than the solubility of calcium hydroxide.
The enthalpy of hydration of the Mg2+\text{Mg}^{2+}Mg2+ ion is more negative than that of the Ca2+\text{Ca}^{2+}Ca2+ ion.
The thermal stability of magnesium carbonate is greater than that of calcium carbonate.
10 exam-style questions on AQA A Level Chemistry Group 2, the alkaline earth metals, covering Group 2, the alkaline earth metals. Each one has a worked solution and a mark scheme showing where the marks go.