1 208 82 pband 222rn 86 2 19 neand 20ne 10 3 63 29 10

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Unformatted text preview: nt with various particles. Large instruments called accelerators were developed to accelerate these particles for penetratio n into the nucleus. Some examples of these transmutations are shown below: 40 18 Ar + 1H ¾¾ 19 K + 1 n ® 40 1 0 209 83 2 Bi + 1 H ¾¾ 210 Po + 1 n ® 84 0 238 92 U + 12 C ¾¾ 244 Cf + 6 1 n ® 98 6 0 Examples: Complete each o f the fo llowing transmutations: 1. 23 11 Na + 1H ¾¾ _____ + 1 n ® 1 0 2. 16 8 O + 1 n ¾¾ _____ + 4 He ® 0 2 5 Chemistry 52 Chapter 18 RADIONUCLIDES · A nuclide will be radioactive if it meets any o f the fo llowing criteria: 1. Its atomic number is greater than 83. 1 3 2. It has fewer n than p in the nucleus (except 1 H , 2 He ) 3. It has odd number of neutrons and odd number of protons (except for 2 H, 6 Li, 10 B, 14 N) 1 3 5 7 Examples: Which is the radionuclide in each o f the fo llowing pairs? 1. 208 82 Pb and 222 Rn 86 2. 19 Ne and 20 Ne 10 3. 63 29 10 Cu and 64 Cu 29 ¾¾ ® ¾¾ ® ¾¾ ® · One example of a practical use for radionuclides is their use in smoke detectors. · In these detectors, the radioculide decays to form α­ particles. · The α­particles io nize (charge) the air particles and keep...
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