Select the valance structure of the transition metal For a BCC crystal, atoms ar

Question

Select the valance structure of the transition metal For a BCC crystal, atoms are touching along which direction? [100] [110] In a FCC crystal, which plane has the highest planar density (PD)? (100) (110) (111) (211) The lattice parameter relationships of a = b = c and alpha = beta = 90 degree refers to which crystal system? Cubic Hexagonal Tetragonal Monoclinic An example of a line defect would be Dislocation Grain boundary Vacancy Twin Hardness refers to the ability of a material to Absorb energy Resist deformation by indentation Cary high loads Work harden Materials with high toughness often have Low ductility and high strength High strength and ductility High yield and low tensile strength Ionic bonding A material that lacks long-range periodic order is called Polymorph Isotropic Amorphous Ceramic Very electronegative atoms (Cl) are most likely to attract an extra electron give up a valence electron form metallic bonds none of the above

Explanation / Answer

8) b (if 1S2 replace with 1S1)

9) b

10) c

11) a

12) a

13) b

14) b

15) b

16) a

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