(a)[3]
State which two of these metals, A, B, C, D and E, are transition elements. Give two reasons for your answer using only the information in Table 4.1.
(b)[1]
Choose the metal chloride that does not dissolve in water. Tick (✓) one box. magnesium chloride potassium chloride silver chloride sodium chloride
(c(i))[1]
Complete Fig. 4.1 by writing these formulae on the diagram: Mg + Cl$_2$ ; MgCl$_2$.
(c(ii))[1]
Explain how Fig. 4.1 shows that the reaction is exothermic.
(d)[2]
Put the four metals in order of reactivity, with the least reactive metal first.
(e)[2]
Complete Table 4.3 to calculate the relative molecular mass of NiP$_4$F$_{12}$.