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Write the structure of different isomeric alkanes corresponding to the molecular formula `C_(6)H_(14)`. Also give their `IUPAC` names.
Strategy: Start with the longest contionous chain with no branching and go on increasing the number of branching by removing one, two, etc, `C` atoms from the longest chain and reattaching them, but do not attach them to the terminal `C` atoms.

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`C_(6)` alkane with the longest continous chain of `6` carbon atoms:
`CH_(3)CH_(2)CH_(2)CH_(2)CH_(2)CH_(3)`
`C_(6)` alkanes with one methyl side chain:
` overset(5)CH_(3)overset(4)CH_(2)overset(3)CH_(2)overset(2)underset(CH_(3))underset(|)CHoverset(1)CH_(3) 2`- Methylepentane
`overset(5)CH_(3)overset(4)CH_(2)-underset(CH_(3))underset(|)overset(3)(CH)-overset(2)CH_(2)overset(1)CH_(3) 3`-Methylpentane
`C_(6)` alkenes with two methyl side chains:
`overset(4)CH_(3)-underset(CH_(3))underset(|)overset(3)(CH)-underset(CH_(3))underset(|)overset(2)(CH)-overset(1)CH_(3) 2,3` -Dimethylbutane
`overset(1)CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(2|)C-overset(3)CH_(2)-overset(4)CH_(3) 2,2`-Dimethylbutane

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