BODR is the "Blue Obelisk Data Repository".

It represents a set of common, standardized data for chemoinformatics
in both XML and plain-text formats. Currently this encompasses:

1) Elements directory
   - element names and symbols
   - atomic masses, covalent radii, van der Waals radii
   - Pauling electronegativities
   - electron affinity
   - ionization potential
   - default element colors for viewers
2) Isotopes directory
   - exact masses of most abundant isotopes
   - isotopic masses and abundances
   - spin
   - kinds of decay, percentages and energy
   - magnetic dipole moment
   - halflife