What group number is erbium in?
Lanthanides
What is the classification of erbium?
Erbium is a chemical element with symbol Er and atomic number 68. Classified as a lanthanide, Erbium is a solid at room temperature.
What kind of metal is erbium?
Erbium is a soft, malleable, lustrous, silvery metal.
What family does the element lutetium belong to?
Fact box
| Group | Lanthanides | Melting point |
|---|---|---|
| Atomic number | 71 | Relative atomic mass |
| State at 20°C | Solid | Key isotopes |
| Electron configuration | [Xe] 4f145d16s2 | CAS number |
| ChemSpider ID | 22371 | ChemSpider is a free chemical structure database |
Who named lutetium?
Lutetium was discovered in 1907–08 by Austrian chemist Carl Auer von Welsbach and Georges Urbain, working independently. Urbain derived the name for the element from Lutetia, the ancient Roman name for Paris, to honour his native city.
Is lutetium poisonous or hazardous?
Lutetium is mildly toxic by ingestion, but its insoluble salts are non-toxic. Like other rare-earth metals lutetium is regarded as having a low toxicity rating but it and its compounds should be handled with care.
Is neodymium man made?
Neodymium is not found naturally in metallic form or unmixed with other lanthanides, and it is usually refined for general use. Although neodymium is classed as a rare-earth element, it is fairly common, no rarer than cobalt, nickel, or copper, and is widely distributed in the Earth’s crust.
Where is lutetium found on Earth?
Lutetium is never found in nature as the free element. Lutetium is found in the ores monazite sand [(Ce, La, etc.) PO4] and bastn°site [(Ce, La, etc.)(…Abundances of lutetium in various environments.
| Location | ppb by weight | ppb by atoms |
|---|---|---|
| Human | (no data) | (no data) |
Where is lutetium used?
Lutetium oxide is used to make catalysts for cracking hydrocarbons in the petrochemical industry. Lu is used in cancer therapy and because of its long half-life, 176Lu is used to date the age of meteorites. Lutetium oxyorthosilicate (LSO) is currently used in detectors in positron emission tomography (PET).
Is u238 radioactive?
While 238U is minimally radioactive, its decay products, thorium-234 and protactinium-234, are beta particle emitters with half-lives of about 20 days and one minute respectively.
Can you eat uranium?
A small amount of uranium will stay in your bones anywhere from months to years after ingestion, but eating uranium is much less toxic than inhaling it. You might not be surprised to learn that eating large doses of a radioactive substance leads to an increased chance of developing a cancer.
Can eating uranium kill you?
Because uranium decays by alpha particles, external exposure to uranium is not as dangerous as exposure to other radioactive elements because the skin will block the alpha particles. Ingestion of high concentrations of uranium, however, can cause severe health effects, such as cancer of the bone or liver.
Can you eat 1 gram of uranium?
Originally Answered: What would happen if I ate 1 gram of uranium? In the short term, probably nothing. Only about 0.5% of ingested uranium is absorbed by the body.
Can plutonium kill you?
Because it emits alpha particles, plutonium is most dangerous when inhaled. When plutonium particles are inhaled, they lodge in the lung tissue. The alpha particles can kill lung cells, which causes scarring of the lungs, leading to further lung disease and cancer.
Is americium man-made?
Americium (chemical symbol Am) is a man-made radioactive metal that is solid under normal conditions. Americium is produced when plutonium absorbs neutrons in nuclear reactors or during nuclear weapons tests. Americium-241 is the most common form of Americium.