Category: Databases

Polyatomic Ions

A list, in alphabetical order, of the most common polyatomic ions, polyatomic anions, polyatomic cations, most common polyatomic ions, table of polyatomic ions, polyatomic anion list.   (Alphabetical by Name) Acetate                                    […]

Acidity Constants

Substance Formula Ka Acetic acid HC2H3O2 1.8×10–5 Acrylic acid HC3H3O2 5.5×10–5 Aluminum 3+ ion Al3+(aq) 1.4×10–5 Ammonium ion NH4+ 5.6×10–10 Anilinium ion C6H5NH3 + 1.4×10–5 Arsenic acid H3AsO4 6.0×10–3 H2AsO4– 1.0×10–7 HAsO42– […]

Isotopes

 Isotope Relative Atomic Mass  Isotopic Composition Standard Atomic Weight 1 H 1     1.007 825 032 07(10)   0.999 885(70)      1.007 94(7) D 2     2.014 101 777 8(4)   0.000 115(70) T 3     3.016 049 2777(25) 2 He 3     3.016 029 3191(26)   0.000 001 34(3)      4.002 602(2) 4     4.002 603 254 15(6)   0.999 998 66(3) 3 Li […]