Complete Table 1.1 by using the appropriate information from the Periodic Table.
State and explain how the ionic radius of $\text{Al}^{3+}$ compares with that of $\text{Mg}^{2+}$.
Draw a labelled diagram that shows the structure and bonding in sodium.
Explain the reason Si has a high melting point.
Complete Fig. 1.1 so that it shows the variation in the melting points of the elements P, S and Cl.
At room pressure, two Period 3 elements react with excess oxygen. Complete Table 1.2.
The solutions in column 3 of Table 1.2 are combined. Name the type of reaction that takes place.
Write an equation showing how $\text{P}_4\text{O}_{10}$ reacts with an excess of water.
Aluminium hydroxide is amphoteric. Explain the meaning of amphoteric.
Write an equation showing the reaction of aluminium hydroxide, $\text{Al(OH)}_3$, with $\text{NaOH(aq)}$.