Structured Question1 The values of the first ionisation energies of neon, sodium and magnesium are 2080, 494 and 736 kJ mol–1 respectively.(a) Explain the meaning of the term first ionisation energy of an atom.(b) Write an equation to illustrate the process occurring when the second ionisation energy of magnesium is measured.(c) Explain why the value of the first ionisation energy of magnesium is higher than that of sodium.(d) Explain why the value of the first ionisation energyof neon is higher than that of sodium.

Essay Question1 (a) Explain how the reactivity of elements (sodium to chlorine) in Period 3 of the Periodic Table towards oxygen changes periodically.(b) Explain the change in bonding and electrical conductivity of the oxides of elements of Period 3 in the molten state.(c) State the change in acid-base property for the oxides of elements in Period 3, sodium to chlorine in the Periodic Table. Write an equation to represent every typical property of the above oxides.