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Hydrogen as the atomic number 1 and promethium has the atomic number 61.
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∙ 8y ago
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What element was discovered first hydrogen or promethium?
Hydrogen was the first.
Is promethium representative or transition element?
Promethium is a transition element.
What is the physical state of promethium at room temperature?
The radioactive metal, Promethium, is a solid at room temperature and standard pressure. It becomes a liquid at 1040ºC and a gas or vapor at 3000ºC.
What are the physical and chemical properties of promethium?
After the Pauling electronegativity (1,13) promethium is a reactive metal but the chemistry of Pm is only superficially known.The valence of ions in solution is +3. Promethium compounds known: halides, oxides, nitrates, sulfates, hydroxides etc.
How much is promethium per pound?
Promethium is a highly radioactive element primarily created in the laboratory, though several of it's isotopes can exist in nature (it's longest-lived isotope has a half-life of only 17 years). It is estimated that in nature, no more than 560 grams (a little over a pound) of Promethium exists in the entire crust of the earth.
What element was discovered first hydrogen or promethium?
Hydrogen was the first.
What is the literal meaning of proton?
it is related to hydrogen and hydrogen came first
When was promethium discovered?
It was first discovered by Jacob A. Marinsky, along with a few other scientists in 1944. But he did not make his claim of Promethium until 1946. The place Promethium was first discovered is still unknown to me...
Is Promethium magetic?
Promethium is paramagnetic.
Is promethium flammable?
Promethium is not flammbale.
What substances are in promethium bromide?
Promethium bromide contain promethium and bromine.
What is the sixty first element in the periodic table of the elements?
Promethium
Is promethium flamable?
Promethium is not flammable.
What is promethium odor?
Promethium has no odor.
Is promethium soluble?
Promethium is not soluble in water.
What is the normal stage of promethium?
Promethium is a metal.
Is promethium a solid?
Yes. Promethium is a solid.
