Question

write the IUPAC format

Answer 1

rank 1 position as its attached with alpha carbon hence the numbering moves anti-clockwise placing butane molecule in seconf position,

step 1 :  bromo in 1 position
step 2:   butane in 2 position
step 3:  combining these gives IUPAC name as below,

1,bromo-2,butyl benzene.

Answer 2

The IUPAC system of nomenclature is the simplest and easiest way of naming organic compounds.

 

Towards the end of the nineteenth century the number of organic compounds known was so large that it became difficult to remember their names. The IUPAC (International Union of Pure and Applied Chemistry) developed a comprehensive system of nomenclature, known worldwide as the IUPAC system of nomenclature. It classified the organic compounds on the basis of the functional group present and named them accordingly. It is a much easy to remember system and is accepted all over the world.