(show all your works and make sure that you answer all questions from part a to

Question

(show all your works and make sure that you answer all questions from part a to part d. Sorry for long questions, but I will give thanks to anyone who help me answer all questions from part a to part d)

a. what happens to the atomic number of an atom that undergoes positron emission

b. what happens to the atomic mass of an atom that undergoes positron emission

c. what happens within the nucleus of an atom that undergoes positron emission

d. write an equation that illustrates what usually happens to the positron that is emitted by the nucleus

Explanation / Answer

a. Emission of a positron (beta+) is excess proton gets converted to a neutron. So atomic number decreases by one unit.

b. The mass number remains the same with positron emission.

c. Within the nucelus the excess proton gets converted into a neutron during positron emission. The mass number remains the same so overall their is no net change in nucelus.

d. Say we start with A radionucelide and goes to B after positron emission.

A ---> B + beta+

Here B would have atomic number 1 less unit then parent radionucleide A.

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