Data Sources

Physical constants

NIST Physics Laboratory - Constants, units and uncertainty

Isotope mass

IAEA Atomic Mass Data Center AME2020

Atomic weight and isotope abundance

IUPAC commission on isotope abundances and atomic weights

Atomic density

ILL Neutron Data Booklet

Covalent Radii

Cordero, et al., Dalton Trans., 2008, 2832-2838, doi:10.1039/801115j

Magnetic form factors

Brown. P. J., In International Tables for Crystallography, Volume C, Wilson. A. J. C (ed), section 4.4.5

Neutron scattering factors

Atomic Institute for Austrian Universities

X-ray scattering factors

Center for X-Ray Optics

Neutron activation

IAEA (1987) Handbook on Nuclear Activation Data. TR 273 (International Atomic Energy Agency, Vienna, Austria, 1987).

Shleien, B., Slaback, L.A., Birky, B.K., (1998). Handbook of health physics and radiological health. Williams & Wilkins, Baltimore.

Isotope half-life

NUBASE2020

Kondev, F.G.; Wang, M.; Huang, W.J.; Naimi, S. and Audi, G. (2021). The NUBASE2020 evaluation of nuclear physics properties. Chin. Phys. C45, 030001. doi:10.1088/1674-1137/abddae

Crystal structure

Ashcroft and Mermin

Oxidation states

wikipedia: List of oxidation states of the elements

Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements, 2nd ed. Butterworth-Heinemann. pp. 27–28. ISBN 0-08-037941-9.

FASTA and biomolecule formulas

Perkins (1988), Modern Physical Methods in Biochemistry Part B, 143-265.