Crystal structures of metal-10H-LK

A cubic crystal system is represented by:

• a = b = c , α = β = γ ≠ 90°

• a = b ≠ c , α = β = γ = 90°

• a = b = c , α = β = γ = 90°

• a ≠ b ≠ c , α = β = γ = 90°

Coordination number in simple cubic crystal structure

• 8

• 6

• 12

• 10

Give number of atoms in BCC.

• 0

• 1

• 2

• 4

Identify the given crystal structure

• HCP

• SC

• FCC

• BCC

What type of bond is illustrated above?

• Metallic
• Ionic
• Covalent
• Wiggly

State coordination number (CN) for FCC.

• 4

• 6

• 8

• 12

State coordination number (CN) for BCC.

• 4

• 6

• 8

• 12

Give number of atoms in FCC.

• 2

• 4

• 6

• 8

Atomic radius for FCC structure is

• a/2

• a√3/4

• a/4

• a√2/4

Atomic radius of BCC sturucture is

• $\sqrt{3}$ a/4

• $\sqrt{2}$ a/4

• 4a/ $\sqrt{3}$

• a/2