Classes of metals products with soft bases, which are bases with covalent bonds. The IUPAC Gold Book provides a more general definition of a class (a) metal ion, as "A metal ion that combines preferentially with ligands containing ligating atoms that are the lightest of their Periodic Group", and a class (b) metal as one that combines preferentially with ligands containing ligating atoms other than the lightest of their Periodic Group. Classes of metals Class A metals are metals that form hard acids. Hard acids are acids with relatively ionic bonds. These metals, such as iron, aluminium, titanium, sodium, calcium and the lanthanides,
I Was the King, I Really Was the King Greenhouse" and "East St O'Neill" as standout tracks, and ended his review with a short summation of the album's overall sound; "Horns parp convincingly, guitars swagger rather than stagger, choruses seem to have some idea of where they want to be in 30 seconds' time and Animals That Swim emerge as – gasp! – actual, potential pop stars". I Was the King, I Really Was the King I Was the King, I Really Was the King is the second album by British alternative rock band Animals That Swim, released in June 1996 via Elemental Records. Its title is taken from