Want to learn more about one of science's heroes from history, Henry Moseley? Moseley solved one of chemistry's greatest puzzles - determining what distinguishes elements from one another and developed a means of identifying elements based on their atomic characteristics. Sadly he lost his life fighting at Gallipoli in WWI.
Learn more about his life and legacy by watching our online film here.
In the periodic table, the post-transition metals sit between the transition metals on their left, and the metalloids on their right. These metallic elements include aluminium, gallium, indium, tin, thallium, lead, and bismuth. Most are soft or brittle, with poor mechanical strength, and have melting points lower than the transition metals.
Lead is one of the seven metals of antiquity that humans identified and made use of in prehistoric times (the other six are gold, silver, copper, tin, iron, and mercury). Lead is now used in alloys, solder, and roofing. Gallium and indium are semiconductors, and thallium is highly toxic and has been used as a pesticide.
Lead is a heavy metal, with the highest atomic number of any stable element. Soft and malleable, it has a relatively low melting point. A freshly cut lead surface is silvery blue, but it tarnishes to dull grey on exposure to air. Notable uses include bullets, and radiation shielding.
Check back soon to learn more about the research we do here at Diamond on Lead.