A081825 Decimal expansion of atomic mass constant, in kg.

1, 6, 6, 0, 5, 3, 9, 0, 6

Offset

-26,2

Comments

From Jianing Song, Nov 26 2023: (Start)

The atomic mass constant (with symbol Da or u) is defined as 1/12 of the mass of an unbound neutral atom of carbon-12 in its nuclear and electronic ground state and at rest.

We have 1.66053906610*10^(-27) kg <= 1 u <= 1.66053906710*10^(-27) kg. Multiplying this by the Avogadro constant (A322578) we get 0.0009999999993533... kg/mol <= (1 u)*N_A <= 0.0009999999999555... kg/mol. In other words, 1 u is strictly less than (but very close to) (0.001 kg/mol)/N_A after the redefinition of SI units in 2019. (End)

Links

Table of n, a(n) for n=-26..-18.

NIST, CODATA Value: atomic mass constant

Wikipedia, Atomic mass constant

Crossrefs

Cf. A081813 (atomic mass constant in MeV/c^2).

Sequence in context: A273989 A197013 A329092 * A272648 A212708 A028969

Adjacent sequences: A081822 A081823 A081824 * A081826 A081827 A081828

Keyword

cons,nonn

Author

Benoit Cloitre, Apr 10 2003

Extensions

Updated by Ivan Panchenko, Sep 11 2014

Updated from CODATA by Andrey Zabolotskiy, Jan 21 2021

Status

approved