What particles make up the atom

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Understanding the Particles that Make Up an Atom

Atoms are the fundamental building blocks of matter, and understanding their composition is crucial for grasping the basics of chemistry and physics. This article delves into the various particles that constitute an atom, drawing insights from multiple research papers.

Atomic Structure: Nucleus and Electrons

Nucleus: Protons and Neutrons

At the heart of an atom lies the nucleus, which is composed of protons and neutrons. Protons are positively charged particles, while neutrons carry no charge. The nucleus is incredibly dense and contains most of the atom's mass Durant1991Mittemeijer2010. The diameter of the nucleus is on the order of 10^-14 meters, which is minuscule compared to the overall size of the atom .

Electrons: Negatively Charged Particles

Surrounding the nucleus is a "cloud" of electrons, which are negatively charged particles. Electrons are much lighter than protons and neutrons, with a mass approximately 1/1836 that of a proton Durant1991Mittemeijer2010. These electrons occupy a relatively large space compared to the nucleus, giving the atom its overall size, which is about 10^-10 meters in diameter .

Interactions and Forces within the Atom

Electromagnetic Interaction

The electrons are held in orbit around the nucleus by the electromagnetic force, which is the attraction between the positively charged protons and the negatively charged electrons . This interaction is crucial for the stability of the atom.

Strong Nuclear Force

Within the nucleus, protons and neutrons are held together by the strong nuclear force, which is much stronger than the electromagnetic force but acts over a very short range . This force is essential for keeping the nucleus intact despite the repulsive forces between the positively charged protons.

Subatomic Particles: Quarks and Leptons

Quarks

Protons and neutrons themselves are not elementary particles; they are composed of even smaller particles called quarks. Quarks come in different types, or "flavors," and are held together by the strong force mediated by particles called gluons .

Leptons

Electrons belong to a category of elementary particles known as leptons. Unlike quarks, leptons do not experience the strong nuclear force. The electron is the most well-known lepton, but there are others, such as the muon and the tau, which are heavier and less stable .

Conclusion

In summary, an atom is composed of a dense nucleus containing protons and neutrons, surrounded by a cloud of electrons. The protons and neutrons are made up of quarks, while the electrons are elementary particles known as leptons. Understanding these components and the forces that hold them together is fundamental to the study of atomic and subatomic physics.

Sources and full results

Most relevant research papers on this topic

A is for atom

An atom's nucleus contains most of its mass, with the electrons being small compared to the overall size of the atom.

1991·

2citations

·J. Durant

Nature·

DOI

Electronic Structure of the Atom; the Periodic Table

The atom consists of a nucleus surrounded by a "cloud" of electrons, with protons and neutrons forming the nucleus and electrons occupying the surrounding space.

2010·

1citation

·E. Mittemeijer

Fundamentals of Materials Science·

DOI

The Atom: science

The atom is a hard sphere composed of a nucleus, protons, neutrons, and orbiting electrons, with Pauli exclusion preventing atom overlap with other atoms.

2020·

1citation

·R. Hanlon

DOI

Particles and Fields

The concept of atoms and fields has revolutionized our understanding of the microscopic world, leading to the discovery of quarks and leptons as the fundamental constituents of matter.

2013·

171citations

·H. Georgi et al.

DOI

Atomic Model with a Single Particle

This paper presents a simple atomic model that represents the oscillation mechanism of a single moving particle, resulting in a composition rich in Deuterium, Tritium, and Helium 4-5-6.

Preprint

2019·

0citations

·A. Andrieu

viXra

What Is an Elementary Particle?

An elementary particle is a concept in quantum mechanics that encompasses all matter and energy, with the term "atom" being retained for chemical atoms but becoming a misnomer.

2020·

75citations

·E. Schrödinger

Interpreting Bodies·

DOI

Atoms and Atomic Particles

Atoms and atomic particles are fundamental building units of all things around us, and understanding their composition is crucial for understanding the universe and its processes.

Literature Review

2017·

0citations

·S. Pandey

International Journal of Research

Bakerian Lecture. Nuclear Constitution of Atoms

The nuclear constitution of atoms consists of a positively charged nucleus surrounded by a distribution of negative electrons, with the resultant charge on the nucleus being about 12 A e.

1920·

115citations

·E. Rutherford

Proceedings of The Royal Society A: Mathematical, Physical and Engineering Sciences·

DOI

The Decrease in Velocity of α -Particles in Passing Through Matter

The velocity curves in gold, copper, aluminium, mica, and air reveal that the number and distribution of electrons in atoms can be determined by considering the absorption or loss of velocity of -particles in passing through matter.

1913·

16citations

·E. Marsden et al.

Proceedings of The Royal Society A: Mathematical, Physical and Engineering Sciences·

DOI

About the nuclear particles’ structure and dimensions

The study presents an original approach to determine the structure and dimensions of nuclear particles, using the total kinetic energy of moving particles, to better understand nucleus phenomena and matter in general.

2018·

39citations

·F. Petrescu

Computational Particle Mechanics·

DOI

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