An ion (/ ˈaɪ.ɒn, - ən /) [1] is an atom or molecule with a net electrical charge. The charge of an electron is considered to be negative by convention and this charge is equal and opposite to the charge of a …

Nov 18, 2025 · Ion, any atom or group of atoms that bears one or more positive or negative electrical charges. Positively charged ions are called cations; negatively charged ions, anions.

If there are more protons in an atom, it becomes a positively charged ion, or a cation. On the other hand, if there are more electrons, it is a negatively charges ion, or an anion. Since opposite charges attract …

Sep 4, 2019 · Learn the definition of an ion, as used in chemistry, chemical engineering, and physics, plus review examples of ions.

Jul 12, 2023 · What Is An Ion In Chemistry? An ion is an atom that has an electric charge because it’s either lost or gained one or more of its electrons. In chemistry, positively-charged ions are called …

What is an Ion? An ion can be defined as a chemical species which holds a positive or negative charge of some magnitude. The term ‘ion’ can be used to refer to atoms or molecules that have non-zero net …

That is, if an atom loses electron/s, it becomes a positively charged ion, while if an atom gains electron/s, it forms a negatively charged ion. To represent the charge held by an ion, first write the …

What is an Ion? An ion is an atom or molecule that carries an electric charge. Ions are identified by the use of a superscript to show the sign and size of their electric charge. Negatively charged ions are …

An ion can be described as a chemical species that hold either a positive or negative charge of some amount of magnitude. The word 'ion' can be used to refer to molecules or atoms that hold non-zero …

Dec 1, 2025 · Ions are atoms that have a positive or negative charge because they have unequal numbers of protons and electrons. If atoms lose electrons, they become positive ions, or cations. If …