The table sets out some of the chemical and thermodynamic characteristics of the halogens. Processes and quantities: $\text{2HX(g)} \rightarrow \text{H}_2\text{(g)} + \text{X}_2\text{(g)}$ : enthalpy change of reaction, $\Delta H^\circ$ $\text{H}_2\text{(g)} + \text{X}_2\text{(g)} \rightleftharpoons \text{2HX(g)}$ : equilibrium constant, $K_p$ $\text{X(g)} \rightarrow \text{X}^+\text{(g)} + e^-$ : ionisation energy, $\Delta H_i^\circ$ Which of the following statements about the relative magnitudes of these quantities are correct?
- A1, 2 and 3 are correct
- B1 and 2 only are correct
- C2 and 3 only are correct
- D1 only is correct