What is the coordination number for a two-dimensional hexagonal close packed structure?

Which of the following can be used to describe a crystalline solid?

Identify the dimensional relation for the unit cell illustrated below.

Which of the following are responsible for high electrical and thermal conductivity of a metal?

Solids are classified as _______

Stainless steel is a/an ____ alloy.

Voids in two-dimensional hexagonal close packed structure are _______ in shape.

What are the percentages of free space in a CCP and simple cubic lattice?