Why is thorium named after Thor?
Thorium was discovered in 1828 by the Norwegian amateur mineralogist Morten Thrane Esmark and identified by the Swedish chemist Jöns Jacob Berzelius, who named it after Thor, the Norse god of thunder. In the second half of the century, thorium was replaced in many uses due to concerns about its radioactivity.
What is th chemistry?
Thorium (Th), radioactive chemical element of the actinoid series of the periodic table, atomic number 90; it is a useful nuclear reactor fuel. Thorium was discovered (1828) by Swedish chemist Jöns Jacob Berzelius.
Which of the following is the basis of element Thoriums name?
Named for the Norse god of thunder, thorium is a silvery, lustrous and radioactive element with potential as an alternative to uranium in fueling nuclear reactors.
What is the symbol for erbium?
Er
Who found erbium?
Carl Gustaf Mosander
What are 3 uses for erbium?
Uses of Erbium The oxide erbia is used as a pink coloring agent in glazes and glasses. Erbium is used in alloys especially with vanadium to decrease the hardness of metals. It is also used in amplifiers and lasers. Erbium is used in photographic filters to absorb infrared light.
Why is erbium so expensive?
It was a spectroscopic tour de force for its time. But what Bunsen could not know, was that there were spectroscopic bands in the infrared part of the spectrum and it is these that are what makes erbium so valuable to us today.
Is erbium toxic?
Erbium is slightly toxic if ingested, but erbium compounds are not toxic. Metallic erbium in dust form presents a fire and explosion hazard.
How is erbium obtained?
Today, erbium is primarily obtained through an ion exchange process from the minerals xenotime (YPO4) and euxenite ((Y, Ca, Er, La, Ce, U, Th)(Nb, Ta, Ti)2O6). Erbium, one of the so-called rare-earth elements on the lanthanide series, is found in the minerals mentioned under dysprosium.
Where is erbium found?
Erbium is never found as a free element in nature. It is found in minerals that include all the rare-earth elements. Erbium is one of the more abundant rare-earth elements. The main mining areas are China and US.
When was erbium found?
1843
What is the normal phase of erbium?
Solid
What technology is most closely linked with erbium?
The overlap of the principal luminescence band of the erbium ion with the low-loss optical transmission window of silica optical fibres, along with the drive for integration of photonics and silicon technology, has generated intense interest in doping silicon with erbium to produce a silicon-based optical source.
What is the symbol of osmium?
Os