What are the 2 isomers of 2-bromobutane?

1-bromo-2-methylpropane and 2-bromo-2-methylpropane

When a molecule has an isomer, it means there is another molecule with the same atoms, but different arrangements.

2-bromobutane has 4 carbons, 9 hydrogens, and a bromine atom. All you have to do is play around with these numbers of atoms until you find structures that fit.

2-bromobutane

1-bromo-2-methylpropane

2-bromo-2methylpropane (or tert-butyl bromide)