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Henri Bacquerel first experimented with phosphorescent materials and discovered radioactivity. The Curies and Ernest Rutherford later experimented with it.

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The first hypothesis on isotopes is from Frederick Soddy (1912); the practical confirmation is attributed to J. J. Thomson (1913).

Henri Becquerel discovered the phenomenon of radioactivity studying uranium salts.

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11y ago
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14y ago

Radioactive isotopes are a natural phenomenon, so nobody "invented" them.

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11y ago

Jesus in 2014 and I was there as one of his 12 disciples. True story

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The first hypothesis on isotopes is from Frederick Soddy (1912); the practical confirmation is attributed to J. J. Thomson (1913).

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12y ago

Henri Becquerel

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Q: Who invented radioactive isotopes?
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Related questions

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.


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.


Is neon radioactive?

No radioactive isotopes of neon are ordinarily found in nature. All elements have radioactive synthetic isotopes, however.


Are all transition elements are radioactive?

Not all of the transition elements are radioactive. Many of them are, and some of them have common radioactive isotopes, but some of them have no naturally occurring radioactive isotopes. Please note that all elements have synthetic radioactive isotopes, at least.