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Which of the following are correct with regard to beta-positive (β+) decay? a. It occurs in a radio nuclide with a neutron excess b. Radio nuclides become stable by a neutron changing to a proton c. It results in reduced atomic number d. It results in increased atomic mass e. It results in ejection of a positron |
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Answer» a. False. β+ decay occurs in radionuclides with a neutron deficit. b. False. Radionuclides lose energy and become stable in β+ decay by a proton changing to a neutron plus a positive electron (known as a positron). The positron is ejected from the nucleus with high energy. c. True. d. False. The conversion of a proton to a neutron results in the atomic mass being conserved. e. True. |
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