The maximum number of possible isomers including (Steroisomers) which may be formed on mono bromination of 1-methylcyclohex-1-ene use Br₂ and UV light is __

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Detailed Solution

The maximum number of possible isomers (including stereoisomers) formed on mono-bromination of 1-methylcyclohex-1-ene using Br₂ and UV light is 8.

Reasoning

From both images, mono-bromination (free radical substitution) can occur at various positions:

Allylic bromination,
On methyl group (side chain),
At different ring positions,
Each product can exist as a pair of enantiomers or diastereomers due to possible chiral centers.

Counting from the image:

Each distinct product structure, including ring bromination, methyl bromination, and allylic bromination, are drawn.
The count for each labeled structure: (i), (ii), (iii), (iv), (v), (w), and their duplicate/same counterparts leads to a total of 8 possible isomers (including stereoisomers, as some marked with * may show chirality).

Final Answer

8 isomers (including possible stereoisomers) may be formed.