material science question pls answer all

[answerhappygod]

material science question pls answer all
i. The directional atomic bonds include a. ionic bonds b. covalent bonds c. metallic bonds ili. Metallic bonding is generally NOT responsible for a. translucency b. malleability c. ductility The van der Walls bond is a a. primary bond in polymeric materials b. dipole-dipole interaction c. charge-transfer fluctuation iv. The near-neighbor distances between anions and cations in a ceramic a. are established by a force balance b. are established by a charge balance c. are established by the coordination number Crystal structure is conventionally described using a. only one unit cell of the Bravais lattices b. lattice and basis c. fec, bec, or hep V. <> vi. During elastic deformation, a metal experiences what? a. necking b. bond breaking c. bond stretching vii. Plastic deformation in metallic alloys is the result of a. necking b. dislocation motion c. the uniaxial tensile test viii. Edge and screw dislocations differ in what way? a. magnitude of their Burgers vectors b. line direction is straight (edge) or curved (screw) c. angle between Burgers vector and line direction ix. Interstitial defects a. come from impurity atoms on lattice sites b. are usually associated with vacant lattice sites c. are found between lattice sites