Th−230 undergoes a series of radioactive decay processes resulting in Bi−214 being the final product. What was the sequence of the processes that occurred?
A
α,α,α,g,β
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B
α,α,α,α,β
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C
α,α,β,β
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D
α,β,β,β,γ
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Solution
The correct option is Bα,α,α,α,β For α decay : AZX→A−4Z−2Y
For β decay : AZX→AZ+1Y
For γ decay: AZX→AZX∗ (* means excited sate )
Here change in mass number =230−214=16
From above equation we can say it is possible when 4 alpha decay will happen. So the option B is correct.