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Isotope Definition & Meaning - Merriam-Webster
Webiso· tope ˈī-sə-ˌtōp. 1. : any of two or more species of atoms of a chemical element with the same atomic number and nearly identical chemical behavior but with differing atomic mass or mass number and different physical properties. 2. : nuclide.
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Isotope | Examples & Definition | Britannica
Webisotope, one of two or more species of atoms of a chemical element with the same atomic number and position in the periodic table and nearly identical chemical behaviour but with different atomic masses and physical properties. Every chemical element has …
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Isotope Definition & Meaning | Dictionary.com
Webisotope. [ ahy-s uh-tohp ] noun Chemistry. any of two or more forms of a chemical element, having the same number of protons in the nucleus, or the same atomic number, but having different numbers of neutrons in the nucleus, or different atomic weights. There are 275 isotopes of the 81 stable elements, in addition to over 800 radioactive ...
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Isotopes and mass spectrometry (article) | Khan Academy
Web, SPQ‑1.B.2 (EK) Google Classroom Key points: Atoms that have the same number of protons but different numbers of neutrons are known as isotopes. Isotopes have different atomic masses. The relative abundance of an isotope is the percentage of atoms with a specific atomic mass found in a naturally occurring sample of an element.
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Isotopes (video) | Khan Academy
WebIsotopes are atoms of the same element with different numbers of neutrons. Because they contain different numbers of neutrons, isotopes have different atomic masses. The average atomic mass of an element is calculated by taking the weighted average mass of the element's naturally occurring isotopes. Created by Sal Khan. Questions Tips & Thanks
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Isotope - Definition, Meaning & Synonyms | Vocabulary.com
WebJun 4, 2023 · An isotope of a chemical element is an atom that has a different number of neutrons (that is, a greater or lesser atomic mass) than the standard for that element. The atomic number is the number of protons in an atom's nucleus. Atomic mass adds to that the number of neutrons in the nucleus.
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Isotope Definition and Examples in Chemistry - ThoughtCo
WebFeb 4, 2020 · Isotopes are samples of an element with different numbers of neutrons in their atoms. The number of protons for different isotopes of an element does not change. Not all isotopes are radioactive. Stable isotopes either never decay or else decay very slowly. Radioactive isotopes undergo decay.
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What are Isotopes? | IAEA - International Atomic Energy Agency
WebAug 19, 2022 · Like everything we see in the world, isotopes are a type of atom, the smallest unit of matter that retains all the chemical properties of an element. Isotopes are forms of a chemical element with specific properties. You can see the different chemical elements on the periodic table. (Graphic: A. Vargas/IAEA)
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Isotope Meaning - What are Isotopes? (Definition and Examples)
WebAn isotope is a variation of an element that possesses the same atomic number but a different mass number. A group of isotopes of any element will always have the same number of protons and electrons. They will differ in the number of neutrons held by their respective nuclei.
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Isotope - Wikipedia
WebThe term isotopes (originally also isotopic elements, now sometimes isotopic nuclides) is intended to imply comparison (like synonyms or isomers). For example, the nuclides 12 6 C, 13 6 C, 14 6 C are isotopes (nuclides with the same atomic number but different mass numbers), but 40 18 Ar, 40 19 K, 40 20 Ca are isobars (nuclides with the same ...
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