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Number of alpha - particles produced dur...

Number of `alpha` - particles produced during the decay process of U - 235 to Pb - 207

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The correct Answer is:
7
`""_(92) U^(235) to ""_(82) Pb^(207) + a ( ""_(2) He^(4)) + b (""_(-1) beta^(0)) , a = (235 - 207)/(4) = (28)/(4) = 7 alpha`
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