First slide

Radio activity

Question

In a radioactive reaction $_{92} X^{232} \to_{82} Y^{204}$ , the number of $α$ -particles emitted is

Easy

A

7
B

6
C

5
D

4

Solution

By using $n_{α} = \frac{A - A'}{4} = \frac{232 - 204}{4} = 7 .$

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