Question

Given below are two statements: 
Statement I: Nitrogen forms oxides with +1 to +5 oxidation states due to the formation of $\mathrm{p} \pi-\mathrm{p} \pi$ bond with oxygen.
Statement II: Nitrogen does not form halides with +5 oxidation state due to the absence of d-orbital in it. 
In the light of the above statements, choose the correct answer from the options given below:

• A. Statement I is true but Statement II is false
• B. Both Statement I and Statement II are false
• C. Statement I is false but Statement II is true
• D. Both Statement I and Statement II are true

Hint:

Nitrogen's ability to form oxides and halides depends on its electronic configuration and the availability of d-orbitals.

Answer 1

The Correct Option is D

To determine the correctness of the given statements, let's examine them individually:

1. Statement I: Nitrogen forms oxides with +1 to +5 oxidation states due to the formation of $\mathrm{p} \pi-\mathrm{p} \pi$ bond with oxygen.
   • Nitrogen indeed forms various oxides, such as N₂O, NO, N₂O₃, NO₂, and N₂O₅, exhibiting oxidation states from +1 to +5.
   • Nitrogen can form multiple bonds with oxygen through $\mathrm{p} \pi-\mathrm{p} \pi$ bonding, enabling stabilization across these oxidation states.
   • Therefore, Statement I is \(\text{true}\).
2. Statement II: Nitrogen does not form halides with +5 oxidation state due to the absence of d-orbital in it.
   • Nitrogen is in the second period and lacks d-orbitals. This absence prohibits nitrogen from expanding its octet, a requirement for forming halides with a +5 oxidation state.
   • This is the reason why nitrogen typically forms halides like NF₃ in its maximum +3 oxidation state and not +5.
   • Hence, Statement II is also \(\text{true}\).

Conclusion: Since both statements are true, the correct answer is "Both Statement I and Statement II are true."

Answer 2

1. Statement I: - Nitrogen can form oxides with oxidation states from +1 to +5 due to the formation of $\mathrm{p} \pi-\mathrm{p} \pi$ bonds with oxygen. - This statement is true. 
2. Statement II: - Nitrogen does not form halides with a +5 oxidation state due to the absence of d-orbitals. 
- This statement is true. Therefore, the correct answer is (4) Both Statement I and Statement II are true.