A proton is a subatomic particle found in the nucleus of an atom, possessing a positive electric charge equal in magnitude to that of an electron but opposite in sign. It plays a crucial role in defining the identity of an element and contributes significantly to the atomic mass of an atom.

Proton

proton

subatomic particle

nucleus of an atom

positive electric charge

Magnitude of electric charge

An electron is a subatomic particle with a negative electric charge, fundamental to the structure of atoms and the flow of electricity. It plays a crucial role in chemical bonding and is a central element of quantum mechanics, influencing the behavior of atoms and molecules.

electron

identity of an element

Atomic mass is the weighted average mass of an atom of an element based on the relative abundance of its isotopes, measured in atomic mass units (amu). It reflects the mass of the nucleus and is crucial for understanding the chemical and physical properties of elements.

atomic mass

An atom is the smallest unit of ordinary matter that retains the properties of an element, consisting of a nucleus made of protons and neutrons, surrounded by electrons in orbitals. Understanding atoms is fundamental to chemistry and physics as they form the building blocks of molecules and ultimately all matter in the universe.

atom

Introduction aux Concepts Fondamentaux de la Structure Atomique

Introduction to Atomic Structure and the Periodic Table

Atomic Number and Mass

Exploring the Concept and Calculation of Relative Atomic Mass

Subatomic Particles and Their Properties

Cấu tạo nguyên tử và bảng tuần hoàn

Nguyên tử và cấu tạo nguyên tử

Introduction to Atomic Structure

Relevant Degrees

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