Crystal Structures and Unit Cells Quiz

The relationship is that the density is calculated using the formula: density = mass / volume, and the volume of a simple cubic unit cell is calculated as edge length cubed.

The molar mass can be calculated using the formula: molar mass = (density * (edge length^3)) / Avogadro's number

The nature of the cubic unit cell is face-centered cubic (fcc).

<p>There are 1.16 × 10^24 unit cells and 2.32 × 10^24 atoms present in 200 g of the element.</p> Signup and view all the answers

<p>Metal conductors have a large number of free electrons, insulators have almost no free electrons, and semiconductors have a moderate number of free electrons which increases with temperature.</p> Signup and view all the answers

<p>N-type semiconductors are those doped with elements that provide extra electrons, increasing the conductivity. The presence of extra electrons due to doping allows for higher conductivity.</p> Signup and view all the answers

<p>The Frenkel defect occurs when an ion leaves its original site and occupies an interstitial position. It does not affect the density or electrical neutrality of the crystal.</p> Signup and view all the answers

<p>An impurity defect is when foreign atoms occupy the lattice points of the host crystal. Types include substitutional and interstitial defects. Vacancies can be formed through aliovalent impurity, for example, Ag+ in NaCl.</p> Signup and view all the answers