Question

How are positrons and electrons similar?

Answer 1

Hint : Lets try to look at these words logically, the word positron consists of the prefix ‘posi’. Now in general this word will refer to positive so positron is a positive electron. Positrons are emitted through positive beta decay of radioactive nuclei.

Complete Step By Step Answer:
Positrons have the same mass and magnitude of charge as the electrons only they have positive charge. An electron is a negatively charged particle, it is free or bound to the nucleus.
Positrons are stable in vacuum and quickly react with electrons and annihilation occurs.
Both positrons and electrons are beta decay particles.
Even though positrons and electrons have opposite charges they have the same magnitude. This states that when annihilation occurs the total charge is conserved.
Electrons are generally found in all atoms but positrons are generated through radioactive decay.

Note :
Both positrons and electrons have the same mass that is $9.11 \times {10^{31}}kg$ positrons quickly react with electrons in vacuum. They belong to the same group fermion and are both leptons. positrons and electrons can destroy each other.