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No, if any Neptunium or Plutonium were present on earth when it formed, both would have decayed to undetectable levels before the first life formed. Small amounts would have formed naturally in early natural fission reactors (Oklo) but they too would have decayed long ago.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoAll isotopes of neptunium are radioactive. Neptunium does not occur in nature, so all isotopes are synthetic.
Wiki User
∙ 9y agoPlutonium (of natural origin) was detected in extremely traces (ppt or less) in some uranium ores.
Wiki User
∙ 13y agoNeptunium is an artificial element; in the nature neptunium is found in uranium ores, but is extremely rare.
Wiki User
∙ 12y agoYes, but not in an elemental form.
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Why are technetum promethium and neptunium considered naturally occurring elements even though they are not found on earth?
These elements exist also naturally - in infinitesimal amounts - in the Earth crust.But practically are artificial elements.
Other than diamond hardest naturally occurring substance?
On earth, diamond is the hardest naturally occurring substance.
How many elements do not occur in nature on earth?
All elements between and including Neptunium (Np) up to the element Ununoctium (Uuo) are not remnants of fusion and do not occur naturally on earth.
Not naturally occurring?
Something that is not naturally occurring is man made.
Hardest naturally occurring substance?
There is nothing harder than Diamond. In answering this question, 'on earth' must be assumed, since there is no reference to 'naturally occurring in the universe' implied or contained within the question.
Why are technetum promethium and neptunium considered naturally occurring elements even though they are not found on earth?
These elements exist also naturally - in infinitesimal amounts - in the Earth crust.But practically are artificial elements.
Other than diamond hardest naturally occurring substance?
On earth, diamond is the hardest naturally occurring substance.
Neptunium's only naturally occurring isotope 237 93Np decays by emitting one alpha particle one beta particle and one gamma ray What is the new atom formed from this decay?
Neptunium 237 is not a natural occurring isotope; all the isotopes of neptunium are artificially obtained. The new isotope formed by decay of Np 237 is protactinium 233.
What form does neptunium likes to take on naturally?
Neptunium is a solid metal.
Naturally occurring substance that is formed in the earth?
Mineral
What is the name of the naturally occurring magnet?
The Earth is a naturally occurring magnet (it has a north and south pole. The mineral magnetite is also magnetic.
Why is a mineral naturally occurring?
because it is made from the groung or earth.
What is an inorganic substance occurring naturally in the earth?
mineral... the answer is a mineral
Which element is the heaviest actininde that occurs naturally on earth?
Uranium is the heaviest naturally occurring actinide.
Were might you see naturally occurring plasma on earth?
lighting and fire
Why are there only three currently occurring radioactive decay series on Earth today?
Four series exist: thorium, uranium, neptunium, actinium.
Is germanium formed naturally?
Germanium is a naturally occurring element, but does not occur in pure form on the Earth (only in compounds).
