What is the density of yttrium?
4.47 g.cm-3
What is the 70th element?
Ytterbium is a chemical element with symbol Yb and atomic number 70. Classified as a lanthanide, Ytterbium is a solid at room temperature.
Is ytterbium a rare earth metal?
Ytterbium is a soft, malleable and ductile chemical element that displays a bright silvery luster when pure. It is a rare-earth element, and it is readily dissolved by the strong mineral acids.
What is the mass number of YB?
173.04 u
Is YB 150 stable?
Twenty-seven radioisotopes have been characterized, with the most stable being 169Yb with a half-life of 32.026 days, 175Yb with a half-life of 4.185 days, and 166Yb with a half-life of 56.7 hours. The isotopes of ytterbium range in atomic weight from 147.967 u (148Yb) to 180.9562 u (181Yb).
How was ytterbium named?
Ytterbium is named after the town of Ytterby near Stockholm in Sweden, and makes up the fourth element to be named after this town, the others being of course yttrium, terbium and erbium.
Who found ytterbium?
Jean Charles Galissard de Marignac
Is ytterbium man made?
Ytterbium Properties It is a rare earth metal, which despite its name, does not mean that it is hard to find. Rare earth metals are really hard to separate from each other. That’s why it took over 70 years to obtain a pure sample! Ytterbium has seven natural isotopes and twenty seven artificial isotopes.
How did lanthanum get its name?
The name is derived from the Greek ‘lanthanein’, meaning to lie hidden.
How much lanthanum is left in the world?
The reserves of this element are thought to be in the region of 6 million mt. Despite being one of the ‘rare earths’, Lanthanum is probably one of the least rare, occurring in a tonnage similar to that of lead and tin combined!
What are 3 uses of lanthanum?
Lanthanum is used in equipment such as colour televisions, fluorescent lamps, energy-saving lamps and glasses. La2O2 is used to make special optical glasses (infrared adsorbing glass, camera and telescope lenses). If added in small amounts it improves the malleability and resistence of steel.
What are 3 uses for scandium?
Scandium is used in aluminum-scandium alloys for aerospace industry components and for sports equipment such as bicycle frames, fishing rods, golf iron shafts and baseball bats. Scandium iodide is used in mercury vapor lamps, which are used to replicate sunlight in studios for the film and television industry.
Is scandium positive or negative?
Scandium is paramagnetic from 0 K (−273 °C, or −460 °F) to its melting point (1,541 °C, or 2,806 °F). It becomes superconducting at −273.1 °C (−459.6 °F) at pressures exceeding 186 kilobars….Scandium.
| atomic number | 21 |
|---|---|
| specific gravity | 2.989 (24 °C, or 75 °F) |
| oxidation state | +3 |
| electron configuration | [Ar]3d14s2 |
Is scandium harmful to humans?
Health effects of scandium Scandium is mostly dangerous in the working environment, due to the fact that damps and gasses can be inhaled with air. This can cause lung embolisms, especially during long-term exposure. Scandium can be a threat to the liver when it accumulates in the human body.
What is an interesting fact about scandium?
Scandium is considered a rare-earth element because it is often found in rare-earth ores. It also shares many of the same chemical properties of other rare-earths. Scandium is the 35th most abundant element in the Earth’s crust. Scandium is the 23rd most abundant element in the Sun.
Is scandium stronger than titanium?
Scandium can be stiffer and lighter than titanium, but not as strong or durable. This is assuming the tube design is about equal. A good designer and fabricator can make a frame (of any material) stronger or lighter or stiffer depending on the users needs.
How is scandium useful?
Scandium is mainly used for research purposes. It has, however, great potential because it has almost as low a density as aluminium and a much higher melting point. An aluminium-scandium alloy has been used in Russian MIG fighter planes, high-end bicycle frames and baseball bats.
What are the 21 elements?
The Elements, sorted by Atomic Number
| Atomic Number | Symbol | Name |
|---|---|---|
| 18 | Ar | Argon |
| 19 | K | Potassium |
| 20 | Ca | Calcium |
| 21 | Sc | Scandium |