Answer
Draw $In$ with 3 dots surrounding it, where each one represents one valence electron.
Work Step by Step
In order to do this, consult the periodic table. We know that the number of valence electrons is given by the period number. To construct the Lewis Symbol, put the element's symbol, surrounded by a dot to represent each valence electron. Using this, we find:
Draw $In$ with 3 dots surrounding it, where each one represents one valence electron.
