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What rare earth metals are found in group?
They are called the Lanthanides Lanthanum Cerium Praesodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium See the exterrnal link
What are cerium's uses?
cerium is found in the females vergina and up the uteris (: <3 !!
What is the valency of promethium?
Promethium is an element and does not have a charge. As it has only be found in trace quantities, its chemistry has not been fully investigated. It has been anticipated that the likely charge when it forms compounds would be +3.
Is promethium malleable?
Yes. Promethium is a rare earth metal and is found in the periodic table in the Lanthanide section. Its symbol is Pm and it has the atomic number 61. It was predicted to exist, but could not be found in the earth's crust. Promethium has no stable isotopes, and what ones it has are relatively short-lived. It was first isolated from spent nuclear fuel, and later discovered in ores of uranium, but only in the most minute quantities.
Which element has a mass 100 less than cerium?
Isotopes of curium have masses between 232 and 252. It is your choice to subtract 1oo from (232 to 252) and to found an isotope. I have the same homework!!! The answer is calcium. - Linz The most important isotope of curium has an atomic weight of 247; 247-100 is 147. This is the mass of an important isotope of promethium.
What are cerium and europium examples of?
One of the examples of cerium is a lighter flint and a fire starter.
What rare earth metals are found in group?
They are called the Lanthanides Lanthanum Cerium Praesodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium See the exterrnal link
Who found cerium?
Wilhelm Hisinger founded the elment cerium.
What are cerium's uses?
cerium is found in the females vergina and up the uteris (: <3 !!
What family does cerium belong to?
Cerium is an element that is found in the Earth's crust. Cerium is in the Lanthanide family which is made up of rare earth metals.
Is cerium man made?
NO!!! It is a Lanthanide element, and is found in the Periodic Table.
What are facts about europium?
Europium is not found in nature as a free element. Many minerals contain europium, with the most important sources being bastnäsite and monazite. Depletion or enrichment of europium in minerals relative to other rare earth elements is known as the europium anomaly. Europium has also been identified in the spectra of the sun and certain stars. Europium has no known biological role. Divalent europium in small amounts is the activator of the bright blue fluorescence of some samples of the mineral fluorite (CaF2). The most outstanding examples of this originated aroundWeardale, and adjacent parts of northern England, and indeed it was this fluorite that gave its name to the phenomenon of fluorescence, although it was not until much later that europium was discovered or determined to be the cause.
What is the valency of promethium?
Promethium is an element and does not have a charge. As it has only be found in trace quantities, its chemistry has not been fully investigated. It has been anticipated that the likely charge when it forms compounds would be +3.
Is promethium malleable?
Yes. Promethium is a rare earth metal and is found in the periodic table in the Lanthanide section. Its symbol is Pm and it has the atomic number 61. It was predicted to exist, but could not be found in the earth's crust. Promethium has no stable isotopes, and what ones it has are relatively short-lived. It was first isolated from spent nuclear fuel, and later discovered in ores of uranium, but only in the most minute quantities.
Cerium?
A soft, ductile, and silvery-white metal that tarnishes when exposed to air. It is the second element in the lanthanide series, and while it often shows the oxidation state of +3 characteristic of the series, it also has a stable +4 state that does not oxidize water. Cerium dioxide is employed in the optics industry for the fine polishing of glass.
Which element has a mass 100 less than cerium?
Isotopes of curium have masses between 232 and 252. It is your choice to subtract 1oo from (232 to 252) and to found an isotope. I have the same homework!!! The answer is calcium. - Linz The most important isotope of curium has an atomic weight of 247; 247-100 is 147. This is the mass of an important isotope of promethium.
What is europium used for?
Because Europium is fairly difficult to obtain it has few practical uses. Europium is unique in the fact that it can absorb more neutrons per atom then any other element. Thus making Europium and its isotopes very valuable in control rods of nuclear reactors. Like many other transition metals Europium is used in producing certain alloys, including striker and lighter flints. It's also been used in the creation of infrared absorbing automotive glass. Europium's compound, Europium Oxide, is often used as a phosphor activator. Europium's other two roles are also involved with phosphors. Europium is used in the production of phosphors for the creation of small lasers. But perhaps what Europium is known best for is the production of the red phosphors that are found in all color television screens.
