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Group Displacement Law

Calculate the...

Question

Calculate the number of $α$ and $β$ -particles in the change.
$_{92}^{235} U ⟶_{82}^{207} P b$

A

7 - α, 4 - β

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B

7 - α, 5 - β

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C

5 - α, 4 - β

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D

none of these

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Solution

The correct option is A $7 - α, 4 - β$
number of alpha particles = differences in mass numbers / 4
= 235-207/4 = 7
number of beta particles = (2 x alpha particles) -( differences in atomic number)
= 4

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