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Q.

Ina radioactive decay chain, T 90232h nucleus decay to P 82212b nucleus. Let Nα and Nβ be the number of  α and β− particles, respectively, emitted in this decay process. Which of the following statements is (are) true?

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a

Nα=5

b

Nα=6

c

Nβ=2

d

Nβ=4

answer is A.

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Detailed Solution

90232  Th is converting into 82212  PbChange in mass number (A) =20Number of  α particle = 204=5Due to 5 α particle, z will be change by 10 unit.Since given change is 8, therefore number of β particle is 2
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