
Concept explainers
To Explain:Results when the atomic number and mass number of a nucleus that emits a positron.

Answer to Problem 74A
When the nucleus emits a positron there is a change in the atomic number. Itdecreases by
Explanation of Solution
Introduction:
Positron is also called as a positive electron. It is a positively charges subatomic particle which has the same mass and magnitude on the charge of an electron and also comprises of an electron with a negative charge.It is one of the types of radioactive decay methods and denoted by
If the nucleus has a very less number of neutrons then a proton will change into a neutron and will transmit a positron that moves fast. It is called beta plus and the process is called positron emission.
When the nucleus emits a positron there is a change in the atomic number that is it decreases by
A positron is said to be the animator kind of an electron.The atomic mass number of positron is zero, but the relative charge of positron is
Conclusion:
When the nucleus emits a positron there is a change in the atomic number. It decreases by
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