Give the common nad IUPAC names for `C_(4)H_(9)Br` isomers and classify them as to whether they are `1^(@),2^(@) " or " 3^(@)`

Explanation

The isomers of `C_(4)H_(9) Br` are the following with common and IUPAC names :
`underset((1^(@)"Bromide"))underset("n-Butyl bromide")underset((1-"Bromobutane"))(CH_(3)CH_(2)CH_(2)CH_(2)Br)" "," "underset((2^(@)"Bromide"))underset("sec-Butyl bromide")underset((2-"Bromobutane"))(CH_(3)CH_(2)CHBrCH_(2))`
`underset((1^(@)"Bromide"))underset("Isobutyl bromide")underset((1-"Bromo-2-methylpropane"))(CH_(3)-overset(CH_(3))overset(|)CH-CH_(2)Br)" "," "underset((3^(@)"Bromide"))underset("tert-Butyl bromide")underset((2-"Bromo-2-methylpropane"))(CH_(3)-overset(CH_(3))overset(|)underset(CH_(3))underset(|)C-Br)`