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Crystal Lab › Elements & packing

Simple cubic Po

Elemental · space group Pm-3m (No. 221) · Z = 1

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Unit cell

Lattice constants
a = 3.350 Å, b = 3.350 Å, c = 3.350 Å; α = 90°, β = 90°, γ = 90°
Cell volume
37.6 ų
Atoms in the cell
1 (Po 1)
Formula units Z
1
Calculated density
9.23 g cm⁻³
Shortest contact
3.350 Å
Packing efficiency
52.4 %

Coordination

Po
CN 6 at 3.35 Å (6 Po)

About the structure

  • Only polonium adopts this packing at room temperature.
  • Atoms touch along the cell edge: a = 2r, so packing efficiency is π/6 ≈ 52%.
  • One cubic hole per atom, at the body centre.

Atom positions (fractional, one cell)

Atomxyz
Po0.00000.00000.0000

Z, coordination numbers, distances, density and packing on this page are computed from these coordinates.

Other elements & packing

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