40 Rates NuclearDecay

40 Rates NuclearDecay - 1 1 Which statement regarding the...

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Unformatted text preview: 1 1 Which statement regarding the radioactive decay of carbon-14 and sodium-21 is correct? emission beta by decays C 14 6 emission. positron by decays Na 21 11 A) emission positron by decays C 14 6 emission. beta by decays Na 21 11 B) C) They both decay by beta emission. D) They both decay by positron emission. E) No decay, they both are stable isotopes. 2 Ne Na N C 21 10 21 11 14 7 14 6 2 3 Origin of the Universe One aspect of science Explain observations in terms of postulates. A postulate is a statement that cannot be proven. Use a small number of postulates to explain a large number of observations and phenomena. The ultimate goal one postulate. The Big Bang Theory Postulate In the beginning there was a burst of energy followed by expansion and cooling. Energy quarks, gluons protons, neutrons He nuclides other nuclides atoms & molecules macroscopic stuff 4 Fusion that produces heavy elements from H and He nuclides continues to occur in stars! MSJ 21.1 Si O C H Na C X n n He n O O He C C He Be Be He He H 28 14 16 8 12 6 1 1 23 11 12 6 4 2 16 8 16 8 4 2 12 6 12 6 4 2 8 4 8 4 4 2 4 2 1 1 2 6 to 1 n for 2 8 4 16 2 2 2 4...
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40 Rates NuclearDecay - 1 1 Which statement regarding the...

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