Lesson_5.2_Homework_and_Solutions

Lesson_5.2_Homework_and_Solutions - Lesson 5.2 Homework...

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Lesson 5.2 Homework Solutions 1. Write the nuclear equations expressing (i) the beta decay of 60 27 Co , (ii) the alpha decay of 226 88 Ra (i) 60 60 0 27 28 1 Co Ni e - + . Cobalt-60 emits a negative beta to become nickel-60 (ii) 226 222 4 88 84 2 Ra Rn He + . Ra-226 emits an alpha to become radon-222. 2. Write the nuclear equations for (i) alpha decay of neptunium-237, (ii) the negative beta decay of phosphorus-32, (iii) the positive beta decay of cobalt-56. (i) 237 233 4 93 91 2 Np Pa He + . Neptunium-60 emits an alpha to become palladium- 233 (ii) 32 32 0 15 16 1 P S e - + . Phosphorus-32 emits an negative beta to become sulpur-32. (iii) 56 56 0 27 26 1 Co Fe e + + . Cobalt-56 emits a positron to become iron-56 3. Tritium is radioactive. (i) Would you expect it to be a β + or β - decay? (ii) What is the daughter nucleus? Is it stable? (i) Tritium has one proton and two neutrons. Since the neutrons to proton ratio is high, we would expect it to be β active. (ii)
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This note was uploaded on 05/01/2011 for the course PHY 2049 taught by Professor George during the Spring '11 term at Edison State College.

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Lesson_5.2_Homework_and_Solutions - Lesson 5.2 Homework...

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