Daily Archives: May 5, 2014


Downloadable Periodic Table – Element Charges 2

EDIT : This table has been updated to include corrections to include corrections to the atomic masses of iron and gallium. The improved table can be found at Color Printable Periodic Table Wallpaper with Oxidation States. This color periodic table contains the number, symbol, name, atomic mass and most common […]


Getting The Lead Out Of Solar Cells

Current solar cell technology uses a perovskite crystalline form containing lead, methylammonium (CH3HN3), and a halogen as the light-absorbing material. Organo-lead halide crystals are responsible for the recent increase in solar cell efficiency gains. Today’s cells work around the 35% efficiency point. The only problem is all the lead found in […]