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Part of Ch.22 Test


in alpha decay, the mass number of the atom before the decay a. equals the sum of the mass numbers of the products
alpha particles are nuclei of c. helium
226/88 Ra -> 222/86 Rn + 4/2 He In this example of alpha decay, what is the mass number of radium before the decay? a. 226
Ra-> Rn + He. in this example, what are the chemical symbols of the products of the decay? Rn and He
During beta decay, a nucleus d. gains a protons and loses a neutron
when a nucleus undergoes nuclear decay by gamma rays, the atomic number of the element remains the same
in radioactive decay element
nuclei with too many or too few neutrons are unstable
the opposite reaction to fusion is called fission
atoms of a particular element that have different numbers of neutrons are called: isotopes
the atomic mass number for the radioisotope carbon- 13 is: 13
Created by: lbanana217