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Although promethium exist in traces in the Earth crust it is an artificial element.
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∙ 8y ago
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How much promethium is produced and how much exists?
The world production of artificial promethium is 1-2 kg/year.The total mass of natural promethium in the Earth crust is under 1 kg.
Is bromine natural or man man made?
natural.
To which period and family does promethium belong?
Promethium belongs in the 7th family. The 7th family is The Lanthanide family.
Is hydrogen man-made or natural?
natural
Is sodium hydroxide natural or man made?
Man made.
Is promethium naturally occurring or man made?
Promethium is man made element.; the natural promethium is estimated to be less than 1 kg in the earth crust.
Is promethium synthetic?
Promethium is a natural chemical element. But because exist in nature only in ultratraces it is artificially prepared.
Is fur natural or man made?
It is natural but there are man-made imitations.
Is canvas natural or man-made?
It can be made from natural or man made fibres.
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.
Is the great plain man made or natural feature?
natural feature
Is concrete natural or man made?
Is limestone natural or man made
How much promethium is produced and how much exists?
The world production of artificial promethium is 1-2 kg/year.The total mass of natural promethium in the Earth crust is under 1 kg.
What do topographic map symbols represent?
Man-made and Natural Resources
Is copper man made or natural?
it is all natural
Is rubber man made?
Rubber is man-made but has natural agents.
Are most natural calamities man made?
No "NATURAL" calamities are man made.
