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This is an accepted version of this page This is the latest accepted revision, reviewed on 22 January 2025. "Element 115" redirects here. For fictional and conspiracy references to element 115, see Materials science in science fiction. Chemical element with atomic number 115 (Mc) Moscovium, 115 Mc Moscovium Pronunciation / m ɒ ˈ s k oʊ v i ə m / (mos- SKOH -vee-əm) Mass number (data not ...
Ghiorso updates a periodic table in 1961 with the newly discovered element lawrencium while co-discoverers Robert Latimer, Torbjorn Sikkeland and Almon Larsh look on. In the mid-1950s it became clear that to extend the periodic chart any further, a new accelerator would be needed, and the Berkeley Heavy Ion Linear Accelerator (HILAC) was built ...
Moscovium (115 Mc) is a synthetic element, and thus a standard atomic weight cannot be given. Like all synthetic elements, it has no known stable isotopes. The first isotope to be synthesized was 288 Mc in 2004. There are five known radioisotopes from 286 Mc to 290 Mc. The longest-lived isotope is 290 Mc with a half-life of 0.65 seconds.
Elemental arsenic was discovered in the 13th century by Albertus Magnus. [14] Antimony was well known to the ancients. A 5000-year-old vase made of nearly pure antimony exists in the Louvre. Antimony compounds were used in dyes in the Babylonian times. The antimony mineral stibnite may have been a component of Greek fire. [14]
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It was apparently discovered by the fictional Thomas Kyle, who was awarded an Ig Nobel Prize for physics for his discovery, [10] and it is a parody on bureaucracy of scientific establishments and on descriptions of newly discovered chemical elements. Administrontium Scientific in-joke: Similar to Administratium and a variation of the joke. It ...