Test A23

What is the coordination number for a simple cubic?

• 4

• 6

• 18

• 12

How many numbers of atoms per unit cell for hexagonal close-packed crystal structure?

• 2

• 4

• 6

• 8

What is the atomic packing factor for face-centered cubic structure?

• 34 %

• 52 %

• 68 %

• 74 %

What is the crystal structure in figure?

• Diamond

• Zinc Blend

• Cesium Chloride

What is the Bravais Lattice?

• All atoms in the crystal are of the same kind

• Mixture of 2 or more interpenetrating lattices

• Some of the lattice points are non-equivalent

• All lattice points are equivalent

Which element is not face-centered cubic structure?

• Au

• Ag

• Cd

• Cu

What is the structure of the figure?

• Single crystal

• Polycrystal

• Amorphous

The elements of Ni, Cu, Ag, Au, Pt, Fe, and W are categorized in crystal structures of?

• Body centered cubic

• Face centered cubic

• Rhombohedral

• Tetragonal

• Hexagonal

Give the crystal lattice plane in the figure.

• (111)

• (110)

• (100)

Give the crystal plane of the shaded region.

• (-1, o, 1)

• (1, 0, -1)

• (-1, 1, 0)

• (0, 1, -1)