Nitrogen and phosphorus are both placed in Group 15 of the Periodic Table. Phosphorus forms a chloride with the formula $\text{PCl}_5$, but nitrogen does not form $\text{NCl}_5$. Which statements would help to account for this?
- A1, 2 and 3
- B1 and 2 only
- C2 and 3 only
- D1 only