Four consecutive ionisation energies (IE) for element E are given. Element E belongs to Period 3 of the Periodic Table. The fifth IE is $16000\ \text{kJ mol}^{-1}$, the sixth IE is $20000\ \text{kJ mol}^{-1}$, the seventh IE is $24000\ \text{kJ mol}^{-1}$ and the eighth IE is $29000\ \text{kJ mol}^{-1}$. E is in which group of the Periodic Table?
- A14
- B15
- C16
- D17