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Concerning radio nuclide production: a. Radio nuclides used in medicine are generally found naturally b. In a cyclotron, protons are forced into the nucleus c. In a nuclear reactor, the addition of a neutron into the nucleus results in an increase in atomic number d. Radio nuclides produced in a cyclotron can be separated from the stable (carrier) element e. Radio nuclides produced in a nuclear reactor by neutron capture alone can be separated from the stable (carrier) element |
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Answer» a. False. Radio nuclides used in medicine are produced artificially. b. True. A cyclotron accelerates protons (and other charged particles) onto the target material, resulting in the addition of the proton into the nucleus, causing a neutron to be ejected. c. False. Atomic number is equal to the number of protons, which is unchanged in this particular process unless the addition of a neutron causes nuclear instability and the expulsion of a proton, in which case the atomic number will decrease. d. True. Radio nuclides produced in a cyclotron can be separated from their carrier as they have different atomic numbers and hence different chemical properties. e. False. Radio nuclides produced in a nuclear reactor by neutron capture cannot be separated from the stable compound (carrier) as they have the same atomic number and hence the same chemical properties. |
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