What are the chemical properties of cerium?
What are the chemical properties of cerium?
Cerium is a malleable, soft, ductile, iron-grey metal, slightly harder than lead. It is very reactive: it tarnishes readily in the air, it oxidizes slowly in cold water and rapidly in hot water. It dissolves in acids. It can burn when heated or scratched with a knife.
What are the chemical properties of promethium?
The physical and chemical properties of promethium are those of a typical rare earth….promethium.
| atomic number | 61 |
|---|---|
| melting point | 1,042 °C (1,908 °F) |
| boiling point | 3,000 °C (5,432 °F) (estimated) |
| specific gravity | 7.264 (at 24 °C [75 °F]) |
| oxidation state | 3 |
What are the chemical properties of indium?
Indium is a soft, ductile, manleable, lustrous metallic metal….Chemical properties of indium – Health effects of indium – Environmental effects of indium.
| Atomic number | 49 |
|---|---|
| Density | 7.31 g.cm-3 at 20°C |
| Melting point | 156 °C |
| Boiling point | 2000 °C |
| Vanderwaals radius | 0.162 nm |
What are the properties of Oganesson?
Oganesson
- Atomic Number: 118.
- Atomic Weight: 294.
- Melting Point: Unknown.
- Boiling Point: Unknown.
- Density: Unknown.
- Phase at Room Temperature: Expected to be a Gas.
- Element Classification: Non-metal.
- Period Number: 7.
What are 3 uses for 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.
What type of element is indium?
metal
indium (In), chemical element, rare metal of main Group 13 (IIIa, or boron group) of the periodic table. Indium has a brilliant silvery-white lustre. It was discovered (1863) by German chemists Ferdinand Reich and Hieronymus Theodor Richter while they were examining zinc ore samples.
Why is the chemical element indium named so?
Indium is named after the bright indigo line in its spectrum. The Japanese discovered that cotton was a difficult fabric to dye, except with indigo. So, indigo dye was widely used to colour cotton throughout the Edo period (1603–1867). A soft, silvery metal that is stable in air and water.
What are some physical properties of dubnium?
Properties of Dubnium. The metal behaves as a solid at temperatures of 20o °C. It occurs as a synthetic element in nature, and it is artificially produced by the bombardment of the californium-249 with the nuclei nitrogen-1. Dubnium is a highly radioactive element with only one single stable isotope dubnium-268 which has a half-life measuring
What is dubnium used for in everyday life?
Uses of dubnium. Only small amounts of dubnium have ever been produced and its isotopes have very short half-lives. For this reason, its only use is within scientific research.
What are 10 chemical properties examples?
Oxidation. It is a chemical reaction in which the loss of electrons of a chemical element or compound occurs.
What is dubnium used for?
Dubnium’s most stable isotope, dubnium-268, has a half-life of about 32 hours and decays through spontaneous fission. Due to the small amounts produced and its short half-life, there are currently no uses for dubnium outside of basic scientific research.