
The antiparticle of electron is
A. Positron
B. $\alpha $-particle
C. proton
D. $\beta $-particle
Answer
498.9k+ views
Hint: An antiparticle of a given particle is defined as one which has the same mass as the particle but opposite charge compared to that of the particle. When an particle and antiparticle collide with each other, then they annihilate to produce energy.
Detailed step by step solution:
The electron is a negatively charged subatomic particle. Its charge and mass are given as
$\begin{gathered}
q = - 1.6 \times {10^{ - 19}}C \\
m = 9.1 \times {10^{ - 31}}kg \\
\end{gathered} $
The symbol for electrons is ${e^ - }$.
The electron is considered a particle. We also have an antiparticle for electron. An antiparticle is the opposite of a particle. The particle and antiparticle have same mass but opposite charge to each other.
The antiparticle of electron is called positron. It has same mass as that of electron but unlike electron, positron is positively charged and its symbol is ${e^ + }$. It was discovered by Anderson.
Hence, the correct answer is option A.
Additional information:
The particles which have half-integral spins are known as fermions (e.g. electron, positron, proton, etc) while the particle with integral spins are known as bosons (e.g. photon).
The special fact about photon is that it is its own antiparticle. This is possible only in the case of bosons, fermions cannot be their own antiparticles.
Note: 1. The proton is not an antiparticle of electron because they have different masses. The antiparticle of proton is antiproton.
2. The beta particle is actually an electron which is created inside the nucleus and a fermion like electron cannot be its own antiparticle.
3. The alpha particle is actually a helium nuclei consisting of 2 protons and 2 neutrons only.
Detailed step by step solution:
The electron is a negatively charged subatomic particle. Its charge and mass are given as
$\begin{gathered}
q = - 1.6 \times {10^{ - 19}}C \\
m = 9.1 \times {10^{ - 31}}kg \\
\end{gathered} $
The symbol for electrons is ${e^ - }$.
The electron is considered a particle. We also have an antiparticle for electron. An antiparticle is the opposite of a particle. The particle and antiparticle have same mass but opposite charge to each other.
The antiparticle of electron is called positron. It has same mass as that of electron but unlike electron, positron is positively charged and its symbol is ${e^ + }$. It was discovered by Anderson.
Hence, the correct answer is option A.
Additional information:
The particles which have half-integral spins are known as fermions (e.g. electron, positron, proton, etc) while the particle with integral spins are known as bosons (e.g. photon).
The special fact about photon is that it is its own antiparticle. This is possible only in the case of bosons, fermions cannot be their own antiparticles.
Note: 1. The proton is not an antiparticle of electron because they have different masses. The antiparticle of proton is antiproton.
2. The beta particle is actually an electron which is created inside the nucleus and a fermion like electron cannot be its own antiparticle.
3. The alpha particle is actually a helium nuclei consisting of 2 protons and 2 neutrons only.
Recently Updated Pages
Master Class 12 Social Science: Engaging Questions & Answers for Success

Class 12 Question and Answer - Your Ultimate Solutions Guide

Class 10 Question and Answer - Your Ultimate Solutions Guide

Master Class 10 Science: Engaging Questions & Answers for Success

Master Class 10 Maths: Engaging Questions & Answers for Success

Master Class 9 General Knowledge: Engaging Questions & Answers for Success

Trending doubts
The gas that burns in oxygen with a green flame is class 12 chemistry CBSE

The probability that a leap year will have only 52 class 12 maths CBSE

Describe the poetic devices used in the poem Aunt Jennifers class 12 english CBSE

And such too is the grandeur of the dooms We have imagined class 12 english CBSE

What does the god that failed refer to class 12 english CBSE

Which country did Danny Casey play for class 12 english CBSE
