Final answer:
When reacting N₂O₅ with NBS and light energy, the number of unique products formed depends on the positions where the bromine radicals attack the N₂O₅ molecule.
Step-by-step explanation:
In the given reaction, 2N₂O₅ decomposes to form 4NO(g) and 3O₂(g). When reacting the indicated structure with NBS (N-bromo succinimide) and light energy, the NBS acts as a source of bromine radicals. These radicals attack the N₂O₅ molecule, leading to the formation of different products. The unique products formed will depend on the positions where the bromine radicals attack the N₂O₅ molecule.
For example, the bromine radicals can attack at the N-O bonds or the N-N bonds, leading to the formation of different products. Therefore, the number of unique products possible will depend on the number of different positions where the bromine radicals can attack the N₂O₅ molecule.
However, without additional information about the specific structure of the indicated molecule, it is not possible to determine the exact number of unique products that are possible.