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Promethium 145 has a half life of 17.7 years.
Promethium 146 has a half life of 5.53 years.
Promethium 147 has a half life of o.22 years.
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∙ 12y ago
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What phase changes can happen to promethium?
Promethium can be melted and boiled.
How does promethium smell like?
Promethium does not occur naturally on earth, but as a by-product of uranium fission. It is very radioactive and its salts have a pinkish or reddish color. Promethium colors its surrounding air with a pale blue-green light.
Can promethium be used on edible plants?
It is impossible, promethium is highly radioactive.
What is the chemical symbol fo promethium?
The chemical symbol of promethium is Pr.
Where is promethium on the periodic table of elements?
Promethium exist in nature only in traces; it is supposed that the Earth crust contain less than 1 kg promethium.
What two 'light' elements have no stable nonradioactive isotopes?
The two elements are elements 43, Tc, technetium, and 61, Pm, promethium. Technetium has a few "nearly stable" isotopes with half-lives of over a million years. Promethium's longest lived isotope has a half-life of about 20 years.
Is Promethium magetic?
Promethium is paramagnetic.
Is promethium flammable?
Promethium is not flammbale.
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 substances are in promethium bromide?
Promethium bromide contain promethium and bromine.
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.
Is promethium a flamable element?
Promethium is not flammable.
Do promethium have odor?
Promethium hasn't odor.
