Ion - Wikipedia
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 proton, which is considered to be positive by convention.
Ion | Definition, Chemistry, Examples, & Facts | Britannica
2024年11月6日 · 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. Ions migrate under the influence of an electrical field and are the conductors of electric current in electrolytic cells.
Table of Ions - What are ions and Types of Ions, Table of ions of ...
Ions are single charged atoms (simple ions) or small charged “molecules” (polyatomic ions).” Simple ions include Na +, Ca 2+, and Cl –. Polyatomic ions include (NH 4) +, (CO 3) 2-, and OH –. Unlike protons and neutrons, electrons can be easily removed and added to an atom.
What Is an Ion? Chemistry Definition - Science Notes and Projects
2021年11月20日 · In chemistry, the definition of an ion is an electrically charged atom or molecule. This means the atom or molecule has an unequal number of protons and electrons. Neutrons carry no net electrical charge, so they don’t affect ions directly.
3.3: Types of ions - Chemistry LibreTexts
The ions that we have discussed so far are called monatomic ions, that is, they are ions formed from only one atom. We also find many polyatomic ions. These ions, which act as discrete units, are electrically charged molecules (a group of bonded atoms with an overall charge).
Atoms, isotopes and ions - AQA Ions - BBC
Learn about and revise the structure of atoms, atoms and isotopes and ions with GCSE Bitesize Combined Science.
3.2: Ions - Chemistry LibreTexts
2022年8月13日 · Ions can be positively charged or negatively charged. A Lewis diagram is used to show how electrons are transferred to make ions and ionic compounds.
What Is an Ion? Definition and Examples - ThoughtCo
2019年9月4日 · Ion Definition in Chemistry. Dorling Kindersley / Getty Images. By. Anne Marie Helmenstine, Ph.D. Updated on September 04, 2019. An ion is defined as an atom or molecule that has gained or lost one or more of its valence electrons, giving it a net positive or negative electrical charge.
3.1: Ions - Chemistry LibreTexts
In an atom, the total number of electrons, negative charge, equals the total number of protons, positive charge, and therefore, atoms are electrically neutral or uncharged. If an atom loses or gains electrons, it will become a positively or negatively charged particle, called an ion.
What is an ion? - ChemTalk
Ion Definition. An ion is an atom or molecule with either a positive or negative electrical charge. An ion has a charge because the number of protons does not equal the number of electrons; to find the number of protons and electrons, check out this article.
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