Crystalline Structure of Solids

Which of the given cubic structure has the highest packing factor

• FCC
• BCC
• SC
• none

Coordination number of 10 is the characteristic of

• BCC
• FCC
• SC
• none

For FCC

• a = 2r
• a = r√3
• a = 4r/√2
• a = r√2/4

Give number of atom/s in simple cubic (SC).

• 0

• 1

• 2

• 4

Give number of atom/s in simple cubic (SC).

• 0

• 1

• 2

• 4

Give number of atom/s in FCC.

• 2

• 4

• 6

• 8

Give number of atom/s in HCP.

• 2

• 4

• 6

• 8

Which crystal structure does the picture show?

• BBC (British Broadcasting Company)

• BCC (Body Center Cubic)

• SC (Simple Cubic)

• FCC (Face-Centered Cubic)

What is the small repeating entity of the atom structure?

• Crystal lattice

• Unit cell

• Crystal structure

• Shape

What is a crystal?

• A pure material that can’t be changed.

• Material with a regular,repeating arrangement of atoms.

• A foggy like material.