6. Answer the following questions for the lattices on the following page: a) state the type of lattice the solid exhibits: (cubic, hexagonal, body-centered, face-centered cubic) b) give the coordination number of the atom/ion if (CN) is after atom c) determine the number of atoms/ions in the unit cell d) provide the formula of the solid

Please, solve and show your work/explanation for each part.

Crystal structure Worksheet 1. NaCl has a has a face centered cubic (fcc) structure. a. How many (a) Na atoms per unit cell, Cl atoms per unit cell and (c) total atoms (Naplus CI) per unit cell for NaCl?

Which one below is not true for Frenkel and Schottky defects in ionic solids? * A Schottky defect Frenkel defect When Frenkel defect occurs, there is no change in charge because the cation maintains the same positive charge as an interstitial. When Schottky defect occurs, the charge neutrality of the crystal is not maintained because it involves both anions and cations. Schottky defect involves a cation vacancy and an anion vacancy pair. Frenkel defect involves a cation-vacancy and a cation-interstitial pair.