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What are the isomers of dibromobenzene?

Answer 1

The benzene parent molecule is #C_6H_6#. It is a high symmetry hexagon, which belongs to the #D_(6h)# point group. How many ways can I arrange 2 heteroatoms around the hexagon for #C_6H_4X_2#?

It doesn't take too much insight to realize that I can position the halides #1,2# (with respect to each other), #1,3#, or #1,4# - 3 isomers of dibromobenzene are thus possible. I urge you to sit down with a pencil and paper to confirm that this is correct.

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Answer 2

Elias Aguila

The isomers of dibromobenzene are ortho-dibromobenzene, meta-dibromobenzene, and para-dibromobenzene.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.