Question

What is an example of a positron decay practice problem?

Answer 1

Hint : The positron is a subatomic particle that has the same mass as an electron and a numerically equivalent but positive charge.

Complete Step By Step Answer:
There are two things to keep in mind about positron decay:
1.A positron and a neutrino are emitted.
2.The mass number remains constant although the atomic number falls by one.
An example of a positron decay equation is as follows:
Magnesium-$23$ is a chemical element with $12$ protons and $11$ neutrons. The ratio of neutrons to protons is$11:12$, or$0.92:1$. To form sodium-$23$, it undergoes positron emission.
$_{12}^{23}Mg \to _{11}^{23}Na + _1^0e + _0^0v$
There are $12$ neutrons and $11$ protons in$_{11}^{23}Na$. The neutron:proton ratio of sodium-$23$ is $12:11$ = $1.09:1$, indicating that the nucleus is stable.
When a proton in a radioactive nucleus decays into a neutron, it emits a positron and an electron neutrino.
Positrons (${\beta ^ + }$) are a type of beta particle. The $_1^0e$ is often used to represent a positron. An electron neutrino is denoted by the letter${v_e}$. When the neutron-proton ratio is less than$1:1$, or when there are too many protons, most nuclei become unstable. They will decompose in order to restore the equilibrium.

Note :
Nuclear transmutation occurs as a consequence of positron decay, which transforms an atom of one chemical element into an atom of a chemical element with a lower atomic number by one unit. When a neutron transforms into a proton, the nucleus emits an electron and an antineutrino, which is known as beta minus decay (${\beta ^ - }$decay).