Which of the following reactions is an example of beta particle emission?
What element is produced by the beta decay of Au-197?
Ir-193
Hg-196
Pt-197
Au-196
Hg-197
回答 (1)
The atomic number and mass number of Au-197 are 79 and 197 respectively.
After beta decay, the atomic number of the element produced is increased by 1 and the mass number is unchanged. Therefore, after beta decay of Au-197, the atomic number of the element produced are 90 and 197 respectively.
The element with atomic number is 80 is Hg. Hence, the element produced is Hg-197.
The answer : Hg-197
收錄日期: 2021-04-18 15:54:36
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