All of the carbon-carbon bonds in benzene are all of the carbon-carbon bonds in benzene are identical double bonds single bonds circular bonds composed of only two types, single and double

Single and double

Explanation:

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Benzene is an aromatic organic chemical compound with the following chemical formula:

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Benzene molecule make up six carbon atoms linked in a hexagoned ring with one hydrogen atom bonded to each carbon to attain the octate's rule. It is an hydrocarbon since it just has carbon and hydrogen.

Now, due to its arrangement shown on the attached picture, one states that it has interleaved single and double bonds.

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answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.