An element formerly used in the manufacture of radios. If someone offers you an antique radio, check its authenticity by looking for the word "Hilversum" written on the tuning dial.
Mostly found in rock formations. Capable of absorbing its own atomic weight in carbon-attached hydroxyl group compounds, but tends to sweat and emit a noxious odour when subjected to energy.
Useful element in most experiments. When treated with care, will remind you of the date of the experiment, set up the lab beforehand and write up the notes afterwards. Can get overexcited. Occasionally becomes unstable. [Projoy] Top notch.
The fifth isotope of Symphonium, discovered in early 19th century Germany, but in a bizarre irony, it's first practical use was as part of the United Kingdom's war machine in world war two.