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Pretest: Energy and Changes in Matter

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Describe what happens to a carbon-11 atom when it undergoes positron emission.

The decay of a carbon-11 atom _____, and this causes it to emit _____.

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Final answer:

When a carbon-11 atom undergoes positron emission, it transforms into boron-11, decreasing the atomic number by 1 while maintaining the mass number. This process stabilizes the nucleus.


Explanation:

When a carbon-11 atom undergoes positron emission, it transforms into boron-11. This decay process does not change the mass number of the nucleus, but it decreases the atomic number of the daughter nucleus by 1. The emission of a positron results in an increase in the neutron-to-proton ratio, stabilizing the nucleus.


Learn more about Positron emission in carbon-11 decay here:

https://brainly.com/question/39194917


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