(a(i))[2]
Complete the table by estimating: • the melting point of rubidium • the density of lithium.
(a(ii))[1]
State the observations when rubidium reacts with water.
(b)[1]
Use the Periodic Table to help you. Deduce the electronic structure of potassium.
(c(i))[1]
What is the name of the gas that ‘pops’ with a lighted splint?
(c(ii))[1]
Select the one pH value from the list that best matches the pH of aqueous lithium hydroxide. pH 2, pH 5, pH 7, pH 13
(c(iii))[2]
Complete the chemical equation for this reaction by adding the missing coefficients. .....Li + N$_2$ $\rightarrow$ .....Li$_3$N