Fig. 2.1 illustrates how the atomic and ionic radii of the Period 3 elements Na to Cl vary. The ionic radius of Si is not shown. Explain the pattern in the atomic radii of the Period 3 elements Na to Cl.
Explain why there is a big difference in the ionic radii of Al and P.
Complete Table 2.1.
State why row B has no data for $\text{Al}_2\text{O}_3$ and $\text{SiO}_2$.
Give an equation for the reaction of $\text{Na}_2\text{O}$ with dilute hydrochloric acid.
Write an equation for the reaction of $\text{Al}_2\text{O}_3$ with a base to form $\text{NaAlO}_2$.
Group 2 nitrates break down on heating to form oxides. State the trend in thermal stability of the Group 2 nitrates down the group.
Identify the other products formed by the thermal decomposition of Group 2 nitrates.