Question

Titanium (ti) has an hcp crystal structure and a density of 4.51 g/cm3(a) what is the volume of its unit cell in cubic meters? (b)

Answer 1

The volume of the Ti unit cell can be calculated using Equation :

`V_(c)=(n* A_(Ti))/(\rho * N_(A))`

For HCP, n tthat is number of atoms/unit cell = 6 atoms/unit cell,

atomic weight for Ti, ATi = 47.9 g/mol.

Thus,
`V_(c)=(6* 47.9)/(4.51 * 6.023* 10^(23))`

= 1.058 × 10−22 cm³/unit cell

= 1.058 × 10−28 m³/unit cell