Question

Which of the following statements regarding positrons are true? Check all that apply.

• Positron formation is accompanied by the conversion of a proton into a neutron.
• Positrons have a mass number of 4.
• Positron formation is accompanied by the conversion of a neutron into a proton.
• Positrons have a nuclear charge of +1.

Answer 1

Concepts and reason

Positron :

Positron, otherwise called positive electron, has emphatically the subatomic particles of a similar mass and greatness of charge as the electron. The nuclear charge of an electron's antiparticle is .

Radioactive decay:

It is a spontaneous process in which an unstable nucleus loses its energy by emitting radiations. There are many types of radioactive decays, namely,, and positive .

Fundamentals

:

It is a type of nuclear decay where the atomic number of the nucleus decreases by two and the mass number of the nucleus decreases by four.

 

Where A is the mass number and Z is the atomic number.

:

It is a type of nuclear decay where the atomic number of the nucleus increases by one and the mass number remains the same.

:

It is a type of nuclear decay in which unstable atomic nuclei dissipate excess energy by gamma radiation.

Spontaneous fission:

This type of radioactive decay is seen in heavier elements that are not stable. Therefore, they break into smaller elements with higher stability.

Positive (positron production):

Positrons are antiparticles of electrons.

Electron capture:

This is opposite to beta emission. Here, electron is captured by unstable nucleus.

The wrong choices in the given problem are stated below:

The right choices in the given problem are shown below.

Ans:

The true statements regarding positrons are marked as follows.