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,
King of the Road (skateboarding) The 2017 teams were announced July 6, 2017. Team Element was the winner. Evan Smith was the MVP. This season of King of the Road aired in 2018 as eleven hour-long TV episodes on the VICELAND channel and the Thrasher website. King of the Road (skateboarding) The title of King of the Road is given out once a year by "Thrasher" magazine. The tradition was started in 2003 and has been one of the premier skateboarding contests in the USA. In the King of the Road (KOTR) contest, a group of pre-invited teams of professional skaters are each given a