Standard atomic weight
A formal short atomic weight
By using the abridged value, and the conventional value for the twelve interval values, a short IUPAC-defined value (5 digits plus uncertainty) can be given for all stable elements.

Standard atomic weight

Section Title: A formal short atomic weight
Table Section Text: By using the abridged value, and the conventional value for the twelve interval values, a short IUPAC-defined value (5 digits plus uncertainty) can be given for all stable elements.

Overview: formal values of the standard atomic weightvte

Element	Ar, standard	Ar, std abridged	Ar, std conventional	Ar, std formal short	Mass number (most stable isotope)

hydrogen	1H	[1.00784, 1.00811]	[1.0078, 1.0082]	1.008	1.008

nitrogen	7N	[14.00643, 14.00728]	[14.006, 14.008]	14.007	14.007

fluorine	9F	18.998403163(6)	18.998	18.998

calcium	20Ca	40.078(4)	40.078(4)	40.078(4)

technetium	43Tc	(none)	[98]

Sentence(s)

Hydrogen has Ar, standard(H) = [1.00 784, 1.00811].

final_sentence: Hydrogen has Ar, standard(H) = [1.00 784, 1.00811].