The atomic weight of hypothetical alloy is 77.4 g/mol, density is 8.22 g/cm', and atomic radius is 0.125 nm, determine whether its crystal structure is FCC, BCC, or simple cubic and then justify your determination
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- The measured density of a CsCl crystal is 3.988 g/cm3. What is the equilibrium separate distance of Cs+ and Cl- ions?A:08 الرسائل المحفو. . . 1 03: Rhenium has a Hexagonal Close-Packed crystal structure with an atomic radius of 0.137 nm and a ratio c/a of 1.615, compute: a) The volume of the unit cell. b) The theoretical density c) Atomic packing factor Note: Avogadro's' number = 6.023×10²³ Atomic weight = 186.21 g/mol إضافة وصف.. . IIIChromium is BCC crystal structure and has atomic weight of 52.0 g/mol and density of 7.19 g/cm3.Compute its atomic radius and give your answer in nanometer unit (nm).
- Suppose that a semiconductor device is using a 10.51-mg sample of a hypothetical element By, that is doped with 0.8 % (by mole) of another hypothetical element Do. How many Do atoms are in the sample? Atomic Mass: By: 26.274 g/mol Do: 82.183 g/mol a. 3.75e+18 b. 4.64e+18 c. 1.93e+18 d. 2.84e+18Zirconium has an HCP crystal structure and density of 6.51 g/cm³, what is the volume of its unit cell in cubic meters? А. 1.396X10-22cm³/unit cell B. 0.465X10-22cm³/unit cell C. 0.233X10-22cm³/unit cell D. 0.698X10-22cm³/unit cellThe atomic radius of an iron atom is (1.238 nm). Iron crystallizes as BCC. Calculate the: 1- lattice parameter of the unit cell, 2- How many atoms are contained within the BCC unit cell
- If the atomic radius of a metal that has the face-centered cubic crystal structure is 0.2718 nm, calculate the volume of its unit cell in nm³.1. A p-type silicon sample with the geometry shown in Figure 5 has parameters L= 0.2 cm, W= 102 cm, and d 8 104 cm. The semiconductor parameters are p = 1016 cm3 and u,= 320 cm2/V-s. For Vx = 10 V and Bz 500 gauss= 5 x 102 tesla, determine I, and VH . 2. The concentration of donor impurity atoms in silicon is Nd = 1015 cm-3. Assume an electron mobility of u = 1300 cm?/V-s and a hole mobility of u, = 450 cm2/V-s. (a) Calculate the resistivity of the material. (b) What is the conductivity of the material? 3. Germanium is doped with 5 x1015 donor atoms per cm3 at T = 300 K. The dimensions of the Hall device are d 5 x 10-3 cm, W= 2 x 102 cm, and L= 10- cm. The current is I, =250 µA, the applied voltage is Vx= 100 mV, and the magnetic fluxdensity is Bz= 500 gauss= 5 x102 tesla. Calculate: (a) the Hall voltage, (b) the Hall field, and (c) the carrier mobilityA high-leaded brass that has a composition of 65.5 wt% Cu, 32.0 wt% Zn, and 2.5 wt% Pb with density equal to 8.94 g/cm^3, 7.13 g/cm^3, and 11.^35 g/cm3, respectively. Determine its approximate density Write up to 3 decimal places. Determine the atom percent (%) of lead. Atomic weights: Cu-63.55 g/mol ;Zn-65.41 g/mol ; Pb-207.2 g/mol Write up to 3 decimal places.
- 4) Molybdenum has a BCC crystal structures, the density of molybdenum is 10.22 g/cm³ and its atomic mass is 95.94 g/mol. What are the atomic concentration, the lattice parameter a and the atomic radius of molybdenum. What is the atomic concentration in the primitive cell? 5) Tungsten (W) has the BCC crystal structure. The radius of the W atom is 0.1371 nm. The atomic mass of W is 183.8 amu (g/mol). Calculate the number of W atoms per unit volume and the density of W (NA = 6.02 x 10²3).Date 1 Page 8. Rhodium has an atomic radius of 0.345 nm and a density of 19.41 g/m³. Determine whether it has an FCC or BCC crystal structure = 102.91 g/mol) (Atomic weight of Rhodium1. A p-type silicon sample with the geometry shown in Figure 5 has parameters L= 0.2 cm, W= 10-2 cm, and d 8 104 cm. The semiconductor parameters are p = 1016 cm3 and u,= 320 cm?/V-s. For Vx = 10 V and Bz = 500 gauss= 5 x 102 tesla, determine I, and VH.