(a)[2]
Explain what the term relative atomic mass means.
(b)[2]
Calculate the relative atomic mass of gallium in this sample. Show your working and give your answer to 4 significant figures.
(c)[3]
Complete the table that describes a gaseous atom of gallium.
(d)[2]
When gallium is heated in excess chlorine, gallium trichloride, $\text{GaCl}_3$, is formed. Draw the shape of the gallium trichloride molecule and suggest the $\text{Cl-Ga-Cl}$ bond angle.
(e(i))[1]
Suggest the equation for the reaction of $\text{Ga}_2\text{O}_3$ with $\text{HCl(aq)}$.
(e(ii))[2]
Suggest an equation for the reaction of gallium oxide with $\text{NaOH(aq)}$.