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Isotope - Wikipedia
https://en.wikipedia.org/wiki/Isotope
WEBIsotopes are distinct nuclear species (or nuclides) of the same chemical element. They have the same atomic number (number of protons in their nuclei) and position in the periodic table (and hence belong to the same chemical element), but differ in nucleon numbers ( mass numbers) due to different numbers of neutrons in their nuclei.
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Isotope | Examples & Definition | Britannica
https://www.britannica.com/science/isotope
WEBFeb 28, 2024 · isotope, 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 one or more isotopes.
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Isotopes and mass spectrometry (article) | Khan Academy
https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:atomic-structure-and-properties/x2eef969c74e0d802:mass-spectrometry-of-elements/a/isotopes-and-mass-spectrometry
WEBThe word isotope is derived from Ancient Greek: the prefix iso-means "same," while -tope (from the Greek word topos) means "place." The isotopes of a given element always contain the same number of protons and therefore occupy the same place on the periodic table.
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Isotope Basics | NIDC: National Isotope Development Center
https://www.isotopes.gov/isotope-basics
WEBWhat are Isotopes? Atoms are composed of a cloud of electrons surrounding a dense nucleus that is 100,000 times smaller and comprised of protons and neutrons. The number of protons (i.e., atomic number, "Z") determines the element; for example, a strontium nucleus always has 38 protons, and a rubidium nucleus always has 37.
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Isotope Definition and Examples in Chemistry - ThoughtCo
https://www.thoughtco.com/definition-of-isotopes-and-examples-604541
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 Is an Isotope? Definition and Examples - Science Notes …
https://sciencenotes.org/what-is-an-isotope-definition-and-examples/
WEBSep 13, 2019 · An isotope refers to a sample of atoms. When the number of protons and neutrons of an individual atom is studied, it is called a nuclide of the element. In nuclear science, the term nuclide is preferred over the term isotope. Nuclides with the same mass number as each other are called isobars.
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Isotopes (video) | Khan Academy
https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:atomic-structure-and-properties/x2eef969c74e0d802:mass-spectrometry-of-elements/v/isotopes
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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Isotopes (video) | Isotopes and ions | Khan Academy
https://www.khanacademy.org/science/hs-chemistry/x2613d8165d88df5e:atoms-elements-and-the-periodic-table/x2613d8165d88df5e:isotopes-and-ions/v/hs_isotopes
WEBAbout. Transcript. Isotopes are atoms of the same element with different numbers of neutrons. Since isotopes of an element have different numbers of neutrons, they also have different masses. The sum of the number of neutrons and protons in an atom is called its mass number. Isotopes can be represented in writing using isotope notation.
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DOE Explains...Isotopes | Department of Energy
https://www.energy.gov/science/doe-explainsisotopes
WEBAll elements have isotopes. There are two main types of isotopes: stable and unstable (radioactive). There are 254 known stable isotopes. All artificial (lab-made) isotopes are unstable and therefore radioactive; scientists call them radioisotopes. Some elements can only exist in an unstable form (for example, uranium).
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What is an Isotope? | ChemTalk
https://chemistrytalk.org/what-is-an-isotope/
WEBAn isotope is an atom that has the same number of protons and a different number of neutrons. The atom is still considered the same element (still contains the same number of protons) as before but will have a different mass. The change in mass may change the atom’s properties.
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