Chemistry Quiz 3

Nuclear Radiation The beta particle consists of Your answer:high-energy rays1 neutron2 neutrons and 2 protons1 electron The nucleus of an atom of radioactive I-131 used in thyroid imaging contains Your answer:53 protons and 75 neutrons53 protons and 78 neutrons53 electrons and 78 neutrons53 neutrons and 78 protons What is the product of the alpha decay of Rn-220? Your answer:Po-216Rn-220Rn-216Ra-224 What particle is missing in the following bombardment reaction? Al-27 + ? = 1n + P-30 Your answer:neutronbetaprotonalpha What particle is released when Ga-75 decays to Ge-75? Your answer:neutronbetagammaalpha What other product occurs when Ac-222 releases an alpha particle? Your answer:Db-218Ra-218Fr-218Ac-218 When an alpha particle is released in nuclear decay, the mass number of the nucleus undergoing decay Your answer:stays the sameIncreases by 4decreases by 4decreases by 2 The radioisotopes used for diagnosis in nuclear medicine Your answer:they have short half lives.they travel rapidly through tissue.are usually gamma emitters.all of the above. Iodine-131 has a half-life of 8 days. How many grams of I-131 in a 4.0-g sample remain after 24 days? Your answer:2.0 g1.0 g0.50g0.0 g Phosphorus-32 has a half-life of 14 days. How long will it take for the P-32 sample to decay to one-fourth of its original level? Your answer:7 days14 days28 days42 days In nuclear fission, Your answer:a large amount of energy is released.large nuclei split into smaller nuclei.small nuclei combine to form larger nuclei.Answers 1 and 2 are correct. Lab coats and gloves provide shielding from Your answer:alpha radiationalpha and beta radiationalpha, beta, and gamma radiationgamm radiation The reaction of H-3 and H-2 to form He-4 and a neutron is an example of Your answer:a fission reactiona fusion reactionboth fission and fusion reactionsneither a fission or fusion reaction A vial contains iodine-131 with an activity of 1.0 mCi/mL. If the radiation tech is to use 4 mCi of I-131 in an "atomic cocktail" for thyroid function, what volume of the I-131 is required? Your answer:1.0 mL2.0 mL3.0 mL4.0 mL An 80-mg sample of technetium-99m is used for a diagnostic test. If Tc-99m has a half-life of 6.0 hr, who much of the Tc-99m sample remains radioactive after 24 hours? Your answer:40 g20 g10 g5 gQuiz 3 Nuclear Radiation answer section1) The beta particle consists of Correct Answer: 1 electron2) The nucleus of an atom of radioactive I-131 used in thyroid imaging contains Correct Answer: 53 protons and 78 neutrons3) What is the product of the alpha decay of Rn-220? Correct Answer: Po-2164) What particle is missing in the following bombardment reaction? Al-27 + ? = 1n + P-30 Correct Answer: alpha5) What particle is released when Ga-75 decays to Ge-75? Correct Answer: beta6) What other product occurs when Ac-222 releases an alpha particle? Correct Answer: Fr-2187) When an alpha particle is released in nuclear decay, the mass number of the nucleus undergoing decay Correct Answer: decreases by 48) The radioisotopes used for diagnosis in nuclear medicine Correct Answer: all of the above.9) Iodine-131 has a half-life of 8 days. How many grams of I-131 in a 4.0-g sample remain after 24 days? Correct Answer: 0.50g10) Phosphorus-32 has a half-life of 14 days. How long will it take for the P-32 sample to decay to one-fourth of its original level? Correct Answer: 28 days11) In nuclear fission, Correct Answer: Answers 1 and 2 are correct.12) Lab coats and gloves provide shielding from Correct Answer: alpha and beta radiation13) The reaction of H-3 and H-2 to form He-4 and a neutron is an example of Correct Answer: a fusion reaction14) A vial contains iodine-131 with an activity of 1.0 mCi/mL. If the radiation tech is to use 4 mCi of I-131 in an "atomic cocktail" for thyroid function, what volume of the I-131 is required? Correct Answer: 4.0 mL15) An 80-mg sample of technetium-99m is used for a diagnostic test. If Tc-99m has a half-life of 6.0 hr, who much of the Tc-99m sample remains radioactive after 24 hours? Correct Answer: 5 g