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WHAT DOES THE NUMBER PREFIX TELL YOU IN THE NAME OF AN ALKYNE?

User Orb
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If you are talking about the numbers in front of the prefix in an example of 2,4-dimethylbenzene, the 2,4 represents the position of the prefix functional group. In this example it tells us that the methyl group ch3 is on position 2 and 4 carbon in the benzene ring.
User Dllhell
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