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Arrange in order of increasing ability to penetrate matter.
Beta, gamma, alpha
Alpha, gamma, beta
Gamma, beta, alpha
Alpha, beta, gamma
In the symbol 167N what the 7 stand for?
Number of neutrons
The force that holds the protons and neutrons together in the nucleus of an atom is called __________.
The half-life of a radioactive isotope is 20.0 minutes. What is the total amount of a 1.00-gram sample of this isotope remaining after 1.00 hour?