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Question

What is the respective number of α  and β particles emitted in the following radioactive decay 90X20080Y168
  1. 6 and 8
  2. 8 and 8
  3. 6 and 6
  4. 8 and 6


Solution

The correct option is D 8 and 6
nα=AA4=2001684=8
nβ=2nαZ+Z=2×890+80=6

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