# Species Formula 2037 P2F4 (Geo)F4P2 2038 Methyl triphosphate anionCH6O10P3 2039 Methyl triphosphate (Geo)CH7O10P3 2040 Methyl triphosphateCH7O10P3 2041 Phosphorus tetramer (Geo)P4 2042 Phosphorus, tetramerP4 2043 Phosphorus trioxide (Geo)O6P4 2044 Phosphorus trioxideO6P4 2045 Phosphorus pentoxide (Geo)O10P4 2046 Phosphorus pentoxideO10P4 2047 Mg(II)O6(2-) (FAPSIY) (Geo) C4H16O16MgP4 2048 Sulfur, cationS 2049 Sulfur, atomS 2050 Sulfur, anionS 2051 Hydrogen sulfide (HS)HS 2052 Hydrogen sulfide, anionHS 2053 Hydrogen sulfide (Geo)H2S 2054 Hydrogen sulfide (H2S)H2S 2055 Beryllium sulfide (Geo)BeS 2056 Boron sulfideBS 2057 S=B-H (Geo)HBS