Explain why the elements in Group II display similar chemical properties.
Explain why the atomic radius of radium, Ra, is easier to predict than the melting point of radium.
Write the electronic configuration of a magnesium ion.
Magnesium is obtained by the electrolysis of molten magnesium chloride. Write equations for the reactions at the negative electrode and at the positive electrode.
Magnesium reacts with aqueous copper(II) sulfate in a redox reaction: $\text{Mg}(s)+\text{Cu}^{2+}(aq)\rightarrow\text{Mg}^{2+}(aq)+\text{Cu}(s)$. Which particle is reduced? Explain your answer.
Magnesium reacts with steam. Name the products formed in this reaction.
Calcium reacts with cold water. Write the equation that represents this reaction.
Magnesium chloride is a soluble salt. Describe how to prepare a pure sample of magnesium chloride crystals from magnesium.