<p>&nbsp;A p-type Si semiconductor is made by doping an average of one dopant atom per&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mn>5</mn><mo>&#215;</mo><msup><mn>10</mn><mn>7</mn></msup></math> silicon atoms. If the number density of silicon atoms in the specimen is&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mn>5</mn><mo>&#215;</mo><msup><mn>10</mn><mn>28</mn></msup></math> atoms/m&sup3;, find the number of holes created per cubic centimetre in the specimen due to doping. Also give one example of such dopants.</p>