Question

Among the given oxides of nitrogen; N₂O, N₂O₃, N₂O₄ and N₂O₅, the number of compound/(s) having N – N bond is:

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

The Correct Option is C

To determine the number of nitrogen oxides among N₂O, N₂O₃, N₂O₄, and N₂O₅ that contain an N–N bond, let's analyze the structure of each compound:

1. N₂O (Nitrous oxide): This compound is commonly known as laughing gas. Its molecular structure can be represented as N≡N–O, where there is one N–N bond.
2. N₂O₃ (Dinitrogen trioxide): The structure of this compound contains two nitrogen atoms bonded to each other. It can be represented as ON–N=O, which clearly shows the presence of one N–N bond.
3. N₂O₄ (Dinitrogen tetroxide): This compound is represented by the formula O₂N–N–O₂. Here again, there is an N–N bond between the two nitrogen atoms.
4. N₂O₅ (Dinitrogen pentoxide): The structure of N₂O₅ does not contain an N–N bond. The compound can be represented as O=N–O–N=O, where each nitrogen atom is connected to an oxygen, and there is no direct N–N bond.

From the above analysis, it is clear that the compounds N₂O, N₂O₃, and N₂O₄ possess an N–N bond. Therefore, the correct answer is that 3 compounds possess an N–N bond.