Ionisation energies and shells

1)    a)  Define the 1^st ionisation energy and write the equation for Bromine [4]

       b)  Write equations including state symbols to represent the:

                i)   1^st ionisation energy of Li           

                ii)  3^rd ionisation energy of Al              

            Use the symbol e- to represent electrons [2]

       c)  What would you notice about the next ionisation energy for (i) and (ii)?  Explain your answer using atomic structure. [7]

2)    How does the 1^st ionisation energy change down group 2 and explain why? [3]

3)    Sketch the graph for the successive ionisation energies for Na [3]

4)    The successive ionisation energies are shown:

        a)  To which group of the periodic table does this element belong? Explain your answer. [2]

        b)  This element is in Period 2, identify the element. Explain your answer.  [3]