46. Palladium - Elementymology & Elements Multidict
Origin of the names of the chemical elements and multilingual dictionary of element names (72 languages); Periodic table and how the elements got their names; Process of naming the elements on the periodic table
PROVING OF RHODIUM METALLICUM | I LOVE HOMEOPATHY
Rhodium comes within the precious metal group (also known as the Platinum group), atomic number 45, group number 9, nestled in between Cobalt and Iridium (above and below) and Palladium and Ruthenium (right and left), and not too far away from Ferrum, Osmium, Platinum, Niccolum. Quite a bunch – I say ‘bunch’ because there is …
154: Owing to the small amounts of produced einsteinium and the short half-life of its most easily produced isotope, there are currently almost no practical applications for it outside of basic scientific research. In particular, einsteinium was used to synthesize, for the first time, 17 atoms of the new element Mendelevium in 1955. / Einsteinium(III) iodide glowing in the dark
153: The rare isotope Einsteinium-254 was used as the calibration marker in the chemical analysis spectrometer ("alpha-scattering surface analyzer") of the Surveyor 5 lunar probe. The large mass of this isotope reduced the spectral overlap between signals from the marker and the studied lighter elements of the lunar surface.
149: Americium-241, an alpha emitter, has a half-life of 432 years. Alpha radiation, as opposed to beta and gamma, is used for two reasons in smoke detector: Alpha particles have high ionization, so sufficient air particles will be ionized for the current to exist, and they have low penetrative power, meaning they will be stopped by the plastic of the smoke detector or the air.
148: Am 95 镅 Americium, named after the Americas, where it was first produced. Most americium is produced by bombarding uranium or plutonium with neutrons in nuclear reactors – one tonne of spent nuclear fuel contains about 100 grams of americium. It is widely used in commercial ionization chamber smoke detectors, as well as in neutron sources and industrial gauges.
147: Caesium-137 has a number of practical uses. In small amounts, it is used to calibrate radiation-detection equipment. In industry, it is used in flow meters, thickness gauges, moisture-density gauges (for density readings, Americium-241/Beryillium providing the moisture reading) and in gamma ray well logging devices.
146: Cs 55 铯 Caesium, from Latin 'caesius' which means 'sky blue' for the bright blue lines in its spectrum. Caesium is mined mostly from pollucite, while the radioisotopes, especially Caesium-137, a fission product, is extracted from waste produced by nuclear reactors. Caesium is extremely reactive and pyrophoric, reacting with water even at −116 °C.