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A1 My best answer is some. some isotopes may be but i don't completely know.
answ2. Most man made nuclides have short half lives. I haven't counted them on a chart, but I'd guess at least ten times the number of man made to natural.
Of course, soon after the Super Nova; from the debris of which the Solar System was assembled; a number of these nuclides would be present, having been created in the Nova. But they would have had the same short half lives.
[Oh yes, all your atoms were once part of a star!]
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Is boron radioactive?
There are no radioactive isotopes of boron that are ordinarily found in nature. All elements have synthetic radioactive isotopes, however.
Is there radioactive plutonium?
All the isotopes of plutonium are radioactive.
Is xenon radioactive?
None of the isotopes of xenon ordinarily found in nature is radioactive. Like all elements, xenon has synthetic radioactive isotopes.
How radioactive is hydrogen?
Hydrogen is not radioactive; its two most common isotopes are stable.
Is neodymium radioactive?
Neodymium is radioactive, though for most practical purposes it can be regarded as stable. 30.4% of neodymium is of two radioactive isotopes, but their half lives are very long, the shorter being 2,290,000,000,000,000 years. Like all other elements, neodymium has synthetic radioactive isotopes.
Does Barium have isotopes that are all radioactive?
Usually not, but all elements have radioactive isotopes.
What are isotopes considered radioactive?
Not all isotopes are radioactive; the radioactive isotopes are unstable and emit radiations.
How are radioactive isotopes different from isotopes?
Both isotopes and radioactive isotopes are pretty much the same but radioactive isotopes are better because it can be used to make medicine.
Does sodium contain radioactive isotopes?
Sodium has no radioactive isotopes.
Does radioactive isotopes have a stable nuclei?
Radioactive isotopes are not stable.
Is aluminium natural or syntheti?
Aluminium is an element, it is not synthetic.
Does plutonium have isotopes that are all radioactive?
All the uranium isotopes are radioactive.
What happens to all radioactive isotopes?
All radioactive isotopes will disintegrate.
Are all isotopes of francium radioactive?
All isotopes of francium are radioactive.
Isotopes which have unstable nucleus and break down at a constant rate over time?
radioactive isotopes! :)
What are Radioactive isotopes used for?
Some examples are deuterium and tritium which are radioactive isotopes of hydrogen.
Is boron radioactive?
There are no radioactive isotopes of boron that are ordinarily found in nature. All elements have synthetic radioactive isotopes, however.
