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18 November, 14:59

After undergoing alpha decay, an atom of radium-226 becomes

a. thorium-234

c. uranium-238

b. radon-222

d. radium-224

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Answers (1)
  1. 18 November, 16:59
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    In alpha decay the mass number decreases by four and the atomic number by two so it will result in Radon - 222 (226-4)
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