Determine in [kg / m3] the density of gold (FCC) that has an atomic radius R = 0.1242 nm

You can determine the index of refraction of a substance by determining its critical angle. (a) What is the index of refraction of a substance that has a critical angle of 49.4° when submerged in carbon tetrachloride? What is the substance, based on this table? crystalline quartz X (b) What would the critical angle be (in degrees) for this substance in air? 1.46

6. Within a cubic unit cell, sketch the following directions: ( :)) (a) [110] (e) [771] (b) [121] (f) [722] (c) [072] (d) [133] (g) [123] (h) [103]

Copper has a cubic structure with a = 0.36151 nm. The atomic radius is 0.1278 nm. The densityis 8.93 g/cm3, and the atomic mass is 63.55 g/mol. Determine (a) the number of atoms in each unit cell; and(b) the packing factor in the unit cell.

Iron exhibits an allotropic behavior change of solid state structure in such a way that when it is heated to 910 C it undergoes a structure change from body-centered cubic BCC to face-centered cubic FCC considering that the atomic radius of iron increases to 0.1241 nm or 0.126 nm more when said temperature is reached obtainThe volume change experienced by the structure when the temperature of 910 C is reached

Determine in [kg / m3] the density of calcium (FCC) that has a radius atomic R = 0.1976 nm.

Sodium chloride (NaCl) has the rock salt crystal structure and a density of 2.17 g/cm³. The atomic weights of sodium and chlorine are 22.99 g/mol and 35.45 g/mol, respectively. (a) Determine the unit cell edge length. nm (b) Determine the unit cell edge length from the radii in the table below assuming that the Nat and Cl- ions just touch each other along the edges. nm Cation Mg2+ Fe2+ Na+ Ionic Radius (nm) 0.072 0.077 0.102 Anion Ionic Radius (nm) CI- 0²- 0.181 0.140

prove the interplanar spacing of the cubic crystal structure (primitive) [prove the distance in cubic]

Copper has a cubic structure with a = 0.36151 nm. The atomic radius is 0.1278 nm. The densityis 8.93 g/cm3, and the atomic mass is 63.55 g/mol. Determine(a) the number of atoms in each unit cell; and(b) the packing factor in the unit cell.

Consider two hypothetical metallic crystal structures A and B. A has an fcc and Ba bcc lattice structure. Both have the same unit cell volume. The Atomic Packing Factor for A is 0.740 and that for B is 0.680. What is the ratio of the fcc to bcc atomic radii? (This question has only one correct answer) O a. 0.92 Ob. 0.44 Ос. 0.63 O d. 0.82 е. 1.21