Physics, 23.04.2020 22:02 golderhadashaowtatz
The nucleus of some isotopes, such as radium-226 shown above, will spontaneously undergo nuclear decay. These isotopes are said to be radioactive.
What causes the nucleus of an isotope to be radioactive?
A. an unstable ratio of protons and neutrons
B. the attraction of protons to electrons
C. exposure to toxic chemicals
D. too many electrons in its orbitals
Answers: 1
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