Question

Ruthenium metal crystallises in three dimensional-hexagonal close packed (hcp) structure. Taking the radius of an atom of Ruthenium to be ‘r’, the volume of a unit cell in the hcp structure is

Answer 1

Answer:

Base area x Height

Explanation:

Take 1 triangle from hexagon gives you area = √3r²

Multiply x2

volume= 6√3 r² x 4 √(2/3)r

           = 24√2r