Question

how many methelene group are present in c4h8​

Answer 1

Hlo Mate

Here's your answer

four

C4H8 means four carbon atoms and eight hydrogen atoms in any configuration. (CH2)4 means specifically four methylene (CH2) groups. Tetrahydrofuran is a cyclic molecule with four CH2 groups and one O atom in roughly a pentagon (it's not quite flat the way a pentagon would be).

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Answer 2

4 group

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