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picometer
This term is used almost exclusively within the realms of quantum chemistry, crystallography, and solid-state physics. It provides a precise scale for describing the distance between nuclei in a chemical bond or the radius of an atom, where nanometers would be too coarse and femtometers too small.
As a standard unit of measurement in the International System of Units (SI), it follows the convention of metric prefixes. While it is a countable unit, it is typically used in technical specifications and scientific data rather than in general conversation.
Meanings
Examples
One picometer is equal to ten inverse angstroms.
The distance between these two atoms is only a few picometers.
We need to measure the lattice constant in picometers for better precision.
The shift in the electron cloud was measured in picometers.
I cannot even imagine how small a single picometer actually is.
The resolution of the instrument allows for measurements down to the picometer scale.
The resolution of the instrument allows for measurements down to the picometer scale.
The bond length is approximately one hundred picometers.