Characteristics of promethium
What are three interesting facts about promethium?
Interesting Promethium Facts
The original spelling of the name promethium was prometheum. The element is named for Prometheus, the Titan who stole fire from the Greek gods to give to mankind. Promethium was the last rare earth element of the lanthanide series to be discovered. It was discovered in 1945 by Jacob A.
What is promethium classification?
The chemical element promethium is classed as a lanthanide and rare earth metal. It was discovered in 1945 by Jacob.
Is promethium very reactive?
Reaction of promethium with water
However, one would predict that the silvery white metal promethium is quite electropositive and would react slowly with cold water and quite quickly with hot water to form promethium hydroxide, Pm(OH)3, and hydrogen gas (H2).
What is the physical state of promethium?
Solid
Chemical Properties of Promethium
| Group | Lanthanides | 1042°C, 1908°F, 1315 K |
|---|---|---|
| Atomic number | 61 | [145] |
| State at 20°C | Solid | 145Pm, 147Pm |
| Electron configuration | [Xe] 4f56s2 | 7440-12-2 |
| ChemSpider ID | 22386 | ChemSpider is a free chemical structure database. |
What are the uses of promethium?
Most promethium is used for research purpose. It can be used as beta radiation source in luminous paint, in nuclear batteries for guided missiles, watches, pacemakers and rados, and as a light source for signals. It is possible that in future it will be used as portable X-ray source.
Is promethium a good conductor?
Yes, promethium will conduct electricity, but it is not as optimal a conductor as copper, silver, and gold.
Is promethium a strong metal?
Answer and Explanation: No, promethium is not the strongest metal. Although this claim was made on a popular television show, the information is inaccurate. The strongest metal alloy is steel, but the strongest metal that is not an alloy is tungsten.
Does promethium glow?
According to Chemicool, promethium was the last of the rare earth lanthanide elements to be discovered. Promethium is very radioactive and emits beta radiation, according to Lenntech. According to Chemicool, metallic promethium is silvery white, and the salts glow in the dark with a pale blue or green light.
Is promethium a solid liquid or gas?
Promethium is a chemical element with symbol Pm and atomic number 61. Classified as a lanthanide, Promethium is a solid at room temperature.
What family is promethium in?
lanthanoid
Promethium atom is a lanthanoid atom and a f-block element atom. A radioactive element of the rare earth family of metals. It has the atomic symbol Pm, and atomic number 61.
Is promethium is a radioactive element?
Promethium is one of only two radioactive elements that are followed in the periodic table by elements with stable forms, the other being technetium. Chemically, promethium is a lanthanide.
Why is it called promethium?
The element was named after Prometheus for the courage and pain needed to synthesize it. Bohuslav Brauner, a Czech chemist, predicted the existence of promethium in 1902, according to the Jefferson Laboratory. According to Chemicool, promethium was the last of the rare earth lanthanide elements to be discovered.
Is promethium a transition metal?
The period 6 inner transition metals (lanthanides) are cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), and lutetium (Lu).
Is promethium a strong metal?
Answer and Explanation: No, promethium is not the strongest metal. Although this claim was made on a popular television show, the information is inaccurate. The strongest metal alloy is steel, but the strongest metal that is not an alloy is tungsten.
What does promethium decay into?
Promethium does not occur naturally on earth, although it has been detected in the spectrum of a star in the constellation Andromeda. Promethium’s most stable isotope, promethium-145, has a half-life of 17.7 years. It decays into neodymium-145 through electron capture.
Where is promethium commonly found?
Promethium is not found in the Earth’s crust. However, it can be observed in uranium ores as a product of uranium decay. In addition, it can be found in the Andromeda galaxy.
Is promethium malleable ductile or brittle?
Yes, promethium is expected to be a ductile metal. This is because all lanthanide metals are soft and highly malleable.
What is the hardness of promethium?
Vendors:
| Physical Properties | Metric | English |
|---|---|---|
| Hardness, Knoop | 63 | 63 |
| Tensile Strength, Ultimate | 160 MPa | 23200 psi |
| Tensile Strength, Yield | 70.0 MPa | 10200 psi |
| Elongation at Break | 25 % | 25 % |