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1. It is a hard, brittle, bluish-white transition metal in the platinum group that is found as a trace element in alloys, mostly in platinum ores.
2. Osmium is a chemical element with the symbol Os and atomic number 76.
3. Yttrium is a chemical element with the symbol Y and atomic number 39.
4. It is a silvery-metallic transition metal chemically similar to the lanthanides and has often been classified as a "rare-earth element".
5. The free application "Chemical element" is very friendly, it has a beautiful and simple interface.
6. Manufacturers use its alloys with platinum, iridium, and other platinum-group metals to make fountain pen nib tipping, electrical contacts, and in other applications that require extreme durability and hardness.
7. In nuclear physics, the island of stability is a predicted set of isotopes of superheavy elements that may have considerably longer half-lives than known isotopes of these elements.
8. Osmium is the densest naturally occurring element, with an experimentally measured density of 22. 59 g/cm3.
9. It is predicted to appear as an "island" in the chart of nuclides, separated from known stable and long-lived primordial radionuclides.
10. Its theoretical existence is attributed to stabilizing effects of predicted magic numbers of protons and neutrons in the superheavy mass region.
11. The element's abundance in the Earth's crust is among the rarest.
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13. Yttrium is almost always found in combination with lanthanide elements in rare-earth minerals, and is never found in nature as a free element. 89Y is the only stable isotope, and the only isotope found in the Earth's crust. • The dictionary works offline - you do not need an internet connection. • Very quick search for descriptions. • The directory "Chemical element" is designed to occupy as little memory as possible.