Aluminium has a third ionisation energy of $2740\,\text{kJ mol}^{-1}$. Which option gives the correct representation of this statement?
- A$\text{Al(g)} \rightarrow \text{Al}^{3+}\text{(g)} + 3\text{e}^- \quad \Delta H^\circ = -2740\,\text{kJ mol}^{-1}$
- B$\text{Al}^{2+}\text{(g)} \rightarrow \text{Al}^{3+}\text{(g)} + \text{e}^- \quad \Delta H^\circ = -2740\,\text{kJ mol}^{-1}$
- C$\text{Al(g)} \rightarrow \text{Al}^{3+}\text{(g)} + 3\text{e}^- \quad \Delta H^\circ = +2740\,\text{kJ mol}^{-1}$
- D$\text{Al}^{2+}\text{(g)} \rightarrow \text{Al}^{3+}\text{(g)} + \text{e}^- \quad \Delta H^\circ = +2740\,\text{kJ mol}^{-1}$