Curated category
Post-transition metals
- AluminiumThe stable isotope 27Al comprises virtually all naturally occurring aluminium. This single isotope makes the element mononuclidic for standard atomic weight…
- LeadLead-208 holds 126 neutrons, a magic number that grants its nucleus exceptional stability. This isotope represents the heaviest stable nucleus known to…
- IndiumIn 1863, German chemists Ferdinand Reich and Hieronymus Theodor Richter examined ores from mines near Freiberg in Saxony.
- TinA bar of tin makes a crackling sound when it is bent by hand. This noise is known as the tin cry. It happens because the crystals inside the metal twine…