Or click here for full access, Premium options. The squat move that Tiger Woods appears to do in his downswing has been widely criticized by the TV golf pundits over the years because of how much his head lowers during this move.r click here for full access, Premium options. The squat move that Tiger Woods appears to do in his downswing has been widely criticized by the TV golf pundits over the years because of how much his head lowers during this move.
What is Rubidium. Rubidium is a chemical element with atomic number 37 which means there are 37 protons and 37 electrons in the atomic structure. The chemical symbol for Rubidium is Rb. Rubidium is a soft, silvery-white metallic element of the alkali metal group, with an atomic mass of 85.4678. Elemental rubidium is highly reactive, with properties similar to those of other alkali metals, including rapid oxidation in air. Rubidium â Properties
iridium (symbol Ir) Silver-white, metallic element discovered in 1804 by the English chemist Smithson Tennant. A platinum-type metal, iridium is hard and brittle and the most corrosion-resistant metal. very rare element (0.0001 ppm of Earth 's crust), iridium is found in the naturally occurring alloys osmiridium (approximately 50% iridium) and iridiosmium (approximately 70% iridium) in Alaska and South Africa. It is obtained by igniting ammonium chloroiridate, (NH 4) 3 IrCl 6, in hydrogen atmosphere.