1. Though nitrogen exhibits +5 oxidation state, it doesn't form pentahalides. Give reason.
2. Why are pentahalides more covalent than trihalides?
3. Why bismuth trihydride is strongest reducing agent amongst all the hydrides of group 15 elements?
4. Why ammonia is Lewis base?
5. Why is dinitrogen is less reactive at room temperature?
6. Why is NO paramagnetic in the gaseous state but diamagnetic in solid and liquid state?
7. The maximum number of bonds formed by nitrogen is 4. Explain.
8. Why ammonia is more basic than phosphine?
9. Why nitrogen exist as a diatomic molecule?
10. What is the effect of nitric acid on proteins?