List the order of reactivity for the following alkyl halides according to the degree of substitution at the carbon atom

[answerhappygod]

List the order of reactivity for the
following alkyl halides according to the degree of
substitution at the carbon atom where the substitution occurs and
the degree of substitution at the neighboring carbon atom to where
the substitution occurs.
1-bromobutane
2-bromobutane
1-bromo-2,2-dimethylpropane
1-chlorobutane
2-chlorobutane
2-chloro-2-methylpropane
1-chloro-2-butene