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In the given radioactive disintegration ...

In the given radioactive disintegration series
`._(92)^(235)U rarr_(82)^(207)Pb`
Calculate number of `alpha` and number of `beta` particles emitted in this series.

A

` 6 alpha, 5beta^-`

B

`7alpha, 4beta^-`

C

`7alpha, 6beta^-`

D

`4alpha, 3beta^-`

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The correct Answer is:
B
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