(a(i))[3]
Complete Table 2.1 so that it shows how many protons, neutrons and electrons are present in the $^{59}\text{Co}$ atom and the $^{65}\text{Cu}^{2+}$ ion.
(a(ii))[2]
Calculate the relative atomic mass of copper, giving your answer to one decimal place.
(b)[2]
State two further physical properties in which copper and cobalt differ markedly from lithium.
(c(i))[2]
Define the term water of crystallisation.
(c(ii))[2]
State the colour and formula of hydrated cobalt(II) chloride crystals.
(c(iii))[2]
State the colour change observed when a few drops of water are added to anhydrous copper(II) sulfate. from ............ to ............
(c(iv))[1]
State what should be done to reverse this colour change.