(a(i))[2]
Explain why both lines rise steadily in radius value as you move down the group.
(a(ii))[2]
State and explain which line shows the atomic radii and which one shows the ionic radii.
(b(i))[1]
Identify the anion present in salt L.
(b(ii))[1]
Identify element M and write an ionic equation for how the white precipitate forms with sulfuric acid.
(b(iii))[2]
Give the formula of salt L, then use it to write the thermal decomposition equation for salt L.
(c(i))[2]
Write ionic equations for how acid is neutralised by calcium hydroxide and by calcium carbonate.
(c(ii))[2]
Suggest and explain why calcium carbonate is the better choice than calcium hydroxide for this use in places with high rainfall.
(d)[2]
Give the formula of the magnesium-containing product when magnesium reacts with cold water and with steam.