2- How many coulombs are represented by these amounts of electrons? (a) 6.482 x 1017 (b) 1.24 x 10'8 (c) 2.46 x 10 19 (d) 1.628 x 1020
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- For APF, Which one of the following is the assumption a. The atoms overlap b. The atoms are rigid cubes c. The atoms do not overlap d. The atoms are not rigid spheres1. The bonds in those materials are cross- linked but they have a low cross linked density.Which type of bonding between atoms is characterized by the sharing of electrons between two or more atoms? Covalent Ionic Metallic Van Der Waals Please answer the question in the image (explantion not needed)
- Increasing the temperature of a semiconductor breaks covalent bonds. For each broken bond, two electrons become free to move and transfer electrical charge. What fraction of the total valance electrons are free to move and what fraction of the covalent bonds must be broken in order that 5×1015 electrons conduct electrical charge in 50 g of silicon?1-Zirconium belongs to which type of structure a. SC b. FCC c. BCC d. HCPZinc crystallizes in HCP structure. Geometrically the height of the unit cell is 43.4378 x10^-8 cm 4.34378x 10^-8 cm 2.1718 x10^-8cm data insufficient
- 142) What property does a bonded material with an electron cloud not exhibit?a) Conductivityb) Heat conductionc) Toughnessd) Ductilitye) An opaque appearance 143) Which have equal and oppositely charged forces?A) DipoleB) metalC) van der waalsD) hydrogenE) london 144) What is Frenkel error?A) atomic vacuumB) displaced ionC) intermediate atomD) ion pair spacingE) slipChemistry Consider FCC copper. If bond energy per atom is 5.62 × 10-19 J, and its atomic radius is 0.128 nm, the surface energy for (100) plane will beWhat are the indices for the direction represented by the vector that has been drawn within a unit cell? A)[0 1 2] B)[2 1 0] C)[1 2 0] D)[1/2 1 0]
- If the energy for Frenkel defect formation in Silver Chloride is 1.1 eV, the number of Frenkel defects at 350°C will be (density of AgCl is 5.50 g/cm^3, atomic masses of Ag & Cl are 107.87 g/mol & 35.45 g/mol, respectively) K=8.62 × 10^-5 eV/K) 6.56 × 10^23 /m^3 6.56× 10^23/m^3 8.24 × 10^23 /m^3 8.24× 10^23 /cm^3Which of the following have the same periodicity as the crystal lattice: a) electron wave function, b) electron distribution probability, c) lattice potentialSilver Ag has the fcc crystal structure as shown in the figure below. Determine its atomic packing factor APF? Given: The radius of Germanium: r(Ag)= 0.144 nm.  Select one: a. 0.14 b. 0.34 c. 0.68 d. 0.12 e. 0.4 f. 0.51 g. 0.74 h. 0.21