Draw the structures of the following groups, and give their more common names. (a) The (1-methylethyl) group

Question:

Draw the structures of the following groups, and give their more common names.
(a) The (1-methylethyl) group
(b) The (2-methylpropyl) group
(c) The (1-methylpropyl) group
(d) The (1,1-dimethylethyl) group
(e) The (3-methylbutyl) group, sometimes called the "isoamyl" group