Question

The symbol of neutron is :

• A. $\mathrm{\alpha }$
• B. $\mathrm{e}$
• C. $\mathrm{p}$
• D. $\mathrm{n}$

Answer 1

The correct option is D

$\mathrm{n}$

The explanation for the correct answer

Option D

• A subatomic particle of about the same mass as a proton but without an electric charge, present in all atomic nuclei except those of ordinary hydrogen known as neutron.
• Neutrons are represented by the symbol$\mathrm{n}$.
• Charge of neutron = $0$
• Mass of neutron = $1.67*{10}^{-27}\mathrm{kg}$

The explanation for the incorrect answers

Option A

• Alpha particles are composite particles consisting of two protons and two neutrons tightly bound together.
• They are represented by the symbol $\mathrm{\alpha }$

Option B

• A stable subatomic particle with a charge of negative electricity, found in all atoms known as electrons.
• Electrons are represented by the symbol $\mathrm{e}$
• Charge of an electron = $1.602*{10}^{-19}\mathrm{C}$
• Mass of an electron = $9.11*{10}^{-31}\mathrm{kg}$

Option C

• A stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron is known as a proton
• Protons are represented by the symbol $\mathrm{p}$
• Charge of an electron = $1.602*{10}^{-19}\mathrm{C}$
• Mass of an electron = $9.11*{10}^{-31}\mathrm{kg}$

Conclusion: Hence Option D is correct.