(a)[1]
Fill in the table to show how the electrons are arranged in a calcium atom.
(b(i))[1]
Explain how the electron arrangement of a strontium atom is similar to that of a calcium atom.
(b(ii))[1]
Explain in what way the electron arrangement of a strontium atom differs from that of a calcium atom.
(c(i))[1]
State the name of gas P.
(c(ii))[1]
Identify the ion that is responsible for the alkalinity of solution Q.
(c(iii))[1]
Suggest a pH value for solution Q.
(c(iv))[2]
Write a chemical equation for calcium reacting with cold water.
(d(i))[3]
Complete the diagrams to show the electronic structures of the ions in magnesium chloride. Indicate the charges on the ions.
(d(ii))[3]
Give three physical properties that are characteristic of ionic compounds such as MgCl$_2$.
(e)[2]
Write an ionic equation for this reaction, including state symbols.