Which of the following reactions is an example of beta particle emission?

2016-11-26 12:20 pm
What element is produced by the beta decay of Au-197?

Ir-193

Hg-196

Pt-197

Au-196

Hg-197

回答 (1)

2016-11-26 1:13 pm
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


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