chemwksht2 - Name _ Radioactive ! Worksheet 1. Each of the...

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Name _______________________________ Radioactive ! Worksheet 1. Each of the following equations represents a radioactive decay process. Supply the missing items. a. b. c. d. 2. What is the final nuclide obtained in each process listed below? a. Indium-123 decays by electron capture. b. A succession of three β -particle emissions beginning with molybdenum-103. c. A succession of two α emissions, followed by two β emissions that begins with astatine-217. 3. Determine the nuclide that a. undergoes electron capture to produce lithium-7, b. undergoes a decay to form 238 U. 4. The half-life of iodine-131 is 8.04 days. Suppose we follow the activity of a sample of iodine-131 while it falls to 10% of its initial value. Calculate how long this will take. 5. Radium-224 decays by α -particle emission. Determine the energy associated with this decay, given these nuclear masses: 224 Ra, 223.9719 amu; 220 Rn, 219.9642 amu; 4 He, 4.00150 amu. 6.
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This note was uploaded on 04/29/2008 for the course CHEM 102 taught by Professor North during the Spring '07 term at William Penn University.

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chemwksht2 - Name _ Radioactive ! Worksheet 1. Each of the...

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