Another structural isomer of \({{\text{C}}_{\text{4}}}{{\text{H}}_{\text{9}}}{\text{Br}}\) is 2-bromo-2-methylpropane. Deduce the number of peaks and the splitting pattern in the \(^{\text{1}}{\text{H}}\,{\text{NMR}}\) spectrum of this isomer.

Number of peaks:

Splitting pattern:

Number of peaks:

1;

Splitting pattern:

singlet / it is not split;

The great majority scored full marks in (b).