Question

The density of argon (face centered cubic cell) is 1.83g/cm3 at 20°C. What is the length of an edge of a unit cell

Answer 1

Answer:

Given,

      Density = 1.83 g/cm³

      FCC(Z) = 4

      M = 40 g/mol

Na = 6 × 10²³

Formula:- Z × M / a³ × Na

  a³ = ρ × Na / Z × M

 = 1.83 × 6 × 10²³ / 4 × 40

 a = 0.525 nm