The structure of isobutyl group in an organic compound is ............

1.	The structure of isobutyl group in an organic compound is ............. .
Answer» 1) `CH_(3)-CH_(2)-CH_(2)-CH_(2)-` 2) `CH_(3)-overset(CH_(3))overset(\|)underset(CH_(3))underset(\|)C` 3) `CH_(3)-underset(CH_(3))underset(\|)(CH)-CH_(2)-` 4) `CH_(3)-underset(\|)(CH)-CH_(2)-CH_(3)` Answer :C

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