Heavy actinides—elements at the bottom of the periodic table, after plutonium—are radioactive, rare and chemically complex, ...

Don’t use them as a nightlight though: they glow like this because curium is really radioactive and therefore toxic. It’s also been to space on numerous occasions. It provides power to ...

This toxic and extremely volatile element is also the most dense metal in the periodic table, with a 22.59 g ... and dulls when exposed to oxygen. The radioactive metal emits a lot of thermal ...

Ram Mohan looks at how bismuth — a remarkably harmless element among the toxic heavy metals in the periodic table — has sparked interest in areas varying from medicinal to industrial chemistry.