This question is about Period 3 elements.
Figure 1 shows the second ionisation energies of some elements in Period 3.
Draw a cross (x) on Figure 1 to show the second ionisation energy of silicon.
Identify the element in Period 3, from sodium to argon, that has the highest second ionisation energy.
Give an equation, including state symbols, to show the process that occurs when the second ionisation energy of this element is measured.
If you were unable to identify the element you may use the symbol Q in your equation.
Explain why the atomic radius decreases across Period 3, from sodium to chlorine.
Identify the element in Period 3, from sodium to chlorine, that has the highest electronegativity.
Magnesium burns in oxygen to form magnesium oxide. Give an equation for this reaction.