On the grids below, plot points to show how the named property of the Group IV elements varies. For each element, your points should indicate whether the melting point / electrical conductivity is ‘high’, ‘medium’ or ‘low’. The point for silicon has already been marked in each case.
Suggest explanations for these trends in terms of the structure and bonding of the Group IV elements for (1) melting point and (2) electrical conductivity.
Select one reaction to support each of the following statements. Give an equation for your chosen reactions, and explain what you would observe as the reaction proceeds. $\text{PbO}$ is more stable than $\text{PbO}_2$.
Select one reaction to support each of the following statements. Give an equation for your chosen reactions, and explain what you would observe as the reaction proceeds. CO is easily oxidised to $\text{CO}_2$.
Select one reaction to support each of the following statements. Give an equation for your chosen reactions, and explain what you would observe as the reaction proceeds. Aqueous $\text{SnCl}_2$ is a useful reducing agent.