(a)[1]
State the collective name used for Group I elements.
(b)[1]
State which Group I element is the least reactive.
(c(i))[2]
Give two observations when lithium is added to water.
(c(ii))[2]
Write a symbol equation for this reaction.
(d)[2]
Describe two further physical properties of Group I elements that differ from those of transition elements.
(e(i))[2]
Give chlorine's physical state and colour at room temperature and pressure.
(e(ii))[2]
Write an ionic equation for the reaction.
(e(iii))[3]
Calculate the enthalpy change, $\Delta H$, for the reaction by using the bond energies in Table 6.1.