What is the result of positron decay?

What is the result of positron decay?

• A. An atom with one fewer proton and one more neutron
• B. An atom with one fewer neutron and one more proton
• C. 2 photons, each with an energy of 1022 kev
• D. The decrease in atomic mass number

Answer: (A)

Positron decay, also known as beta plus decay, occurs when a proton in an atomic nucleus is transformed into a neutron, accompanied by the emission of a positron (the antiparticle of the electron). As a result of this transformation, the atomic number of the atom decreases by one, leading to the loss of one proton. In the process, there is a conversion of that proton into a neutron, which increases the number of neutrons in the nucleus. This transformation changes the identity of the element itself, as the atomic number (which defines the element) is reduced. The correct answer highlights that what occurs is an atom with one fewer proton (due to the conversion of a proton into a neutron) and one more neutron (since a neutron is produced in the process). This fundamental change in the atomic structure is characteristic of positron decay and distinguishes it from other decay processes. The other options do not accurately describe the nature of positron decay. For instance, the option stating that it results in an atom with one fewer neutron and one more proton incorrectly suggests that the typical outcome of positron decay involves an increase in protons instead of a decrease. Similarly, while photons are emitted during positron annihilation (when the emitted positron interacts

Positron decay, also known as beta plus decay, occurs when a proton in an atomic nucleus is transformed into a neutron, accompanied by the emission of a positron (the antiparticle of the electron). As a result of this transformation, the atomic number of the atom decreases by one, leading to the loss of one proton. In the process, there is a conversion of that proton into a neutron, which increases the number of neutrons in the nucleus.

This transformation changes the identity of the element itself, as the atomic number (which defines the element) is reduced. The correct answer highlights that what occurs is an atom with one fewer proton (due to the conversion of a proton into a neutron) and one more neutron (since a neutron is produced in the process). This fundamental change in the atomic structure is characteristic of positron decay and distinguishes it from other decay processes.

The other options do not accurately describe the nature of positron decay. For instance, the option stating that it results in an atom with one fewer neutron and one more proton incorrectly suggests that the typical outcome of positron decay involves an increase in protons instead of a decrease. Similarly, while photons are emitted during positron annihilation (when the emitted positron interacts