(a)[1]
Construct an equation for the first ionisation energy of oxygen, and include state symbols.
(b(i))[3]
State and explain the overall pattern in first ionisation energies across Period 2.
(b(ii))[2]
Explain why ionisation energy A in Fig. 1.1 does not match the overall pattern in first ionisation energies across Period 2.
(c)[3]
Element E lies in Period 3 of the Periodic Table. The first eight ionisation energy values of E are shown in Table 1.1. Deduce the full electronic configuration of E. Explain your answer.