ENG1001B Tutorial Week 7

Which of the following properties will a crystalline material possess?

• ordered packing structure

• high bonding energy

• stability

• low density

What structure does diamond have?

• crystalline

• polycrystalline

• amorphous

What structure does glass have?

• crystalline

• polycrystalline

• amorphous

Which of these terms is used to denote the smallest repeating entity of the crystalline structure?

• lattice

• unit cell

• coordination number

• packing factor

What kind of structure is depicted in the above?

• SC

• FCC

• BCC

• HCP

What kind of structure is denoted in the image?

• FCC

• BCC

• SC

• HCP

The coordination number of a hexagonal closed packed structure is ___.

The body-centred cubic structure has ___ atoms in the unit cell.

• 1

• 2

• 3

• 4

Which crystalline structure has the highest atomic packing factor?

• SC

• BCC

• FCC

• HCP

Which formula can be used to calculate the number of atoms in a HCP structure?

• $N_i+\frac{N_f}{2}+\frac{N_c}{6}$

• $N_{i\ }+\frac{N_f}{2}+\frac{N_c}{8}$