Fill in the table to estimate the melting point of lithium and the atomic radius of potassium.
Describe the pattern in the boiling points of the Group I elements down the group.
Use the information in the table to suggest why predicting the thermal conductivity of caesium is difficult.
Predict the physical state of rubidium at $45 ^{\circ}\text{C}$. Give a reason for your answer.
Balance this chemical equation.\n\n$\dots\text{Li} + \text{O}_2 \rightarrow \dots\text{Li}_2\text{O}$
Is lithium oxide a basic oxide or an acidic oxide? Give a reason for your answer.
State the name of the particle lost from a lithium atom as it forms a lithium ion.
Fill in the table to calculate the relative molecular mass of $\text{C}_2\text{H}_5\text{Li}$. Use your Periodic Table to help you.