(a(i))[2]
Complete the table by predicting: • the melting point of potassium • the density of francium
(a(ii))[1]
Describe the observations you would see when lithium reacts with water.
(b(i))[1]
Deduce the electronic structure of sodium. Use the Periodic Table to help you.
(b(ii))[1]
Explain why a potassium ion carries a single positive charge.
(c(i))[2]
Complete the equation for this reaction. 2Na + 2H$_2$O $\rightarrow$ ....NaOH + ........
(c(ii))[1]
Choose the value from the list that most appropriately describes the pH of aqueous sodium hydroxide. pH 1 pH 4 pH 7 pH 14