Å⁻³
per cubic angstrom
Number densityexact by definition
The per cubic angstrom is exactly 10³⁰ m⁻³, the atomic-scale number density used in crystallography and atomistic simulation. Silicon is 0.050 atoms/ų, water 0.033 molecules/ų, and metals cluster between 0.05 and 0.09.
| 1 Å⁻³ | 1.0000000e+30 m⁻³ |