spontaneous decay of unstable atomic nuclei.
Yes.
spontaneous disintegration of atomic nuclei
Ernest Rutherford
Radioactivity is caused by unstable atoms, that break apart.
The radioactivity is caused by the the instability of several atomic nuclei; and this instability comes from the ratio protons/neutrons in the nucleus.
No, it was discovered by Marie and Pierre Curie. Other scientists also contributed, such as Henri Bequerel. (Bequerel is the S.I unit for radioactivity). No, Marie Curie discovered and named radioactivity. Sadly her research into radiation caused her death.
he noticed the first effects of radioactivity while he observed that with exposure to the sunlight the mineral gave off a penetrating energy that could expose film.
It is a man-made element and, due to its high radioactivity does not exist in nature.
I thought Marie Curie had something to do with it because she died from lukimeia which was caused from her being exposed to it :)
No, Marie Curie did not commit suicide. She passed away in 1934 due to aplastic anemia, which was likely caused by her prolonged exposure to radiation in her research on radioactivity.
The primal heat from the deep interior of the Earth is mainly due to radioactive decay, with a small contribution due to gravity compression.
It is said that radioactivity in plants and animals, or food items, may have caused the 1986 nuclear accident in Chernobyl. In order to determine the radioactivity of these items, one could examine the DNA, carbohydrate content, H2O and other biochemical pathways that are found in all plant and animal species.