EngiRef / Atomic Constant

Neutron Mass

Neutron Mass (mₙ) = 1.6749 × 10^-27 kg. Rest mass of a neutron. A atomic constant in the free EngiRef reference, with 27 more alongside it.

atomicmₙ

Specification

Name
Neutron Mass
Symbol
mₙ
Value
1.6749 × 10^-27
Unit
kg
Category
atomic
Description
Rest mass of a neutron.

Constants

Related constants

Scientific constants

Electron Mass

Rest mass of an electron.

atomicmₑ

Proton Mass

Rest mass of a proton.

atomicmₚ

Atomic Mass Unit

Unified atomic mass unit. 1/12 mass of ¹²C.

atomicu

Bohr Radius

Most probable distance of electron from nucleus in hydrogen.

atomica₀

Speed of Light in Vacuum

Exact defined value in SI. Maximum speed in universe.

fundamentalc

Planck Constant

Exact defined value in SI. Relates photon energy to frequency.

fundamentalh