Isotope - Wikipedia
WEBThe term isotope is derived from the Greek roots isos (ἴσος "equal") and topos (τόπος "place"), meaning "the same place"; thus, the meaning behind the name is that different isotopes of a single element occupy the same position on the periodic table. [2]
Isotope | Examples & Definition | Britannica
WEBSep 26, 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.
Isotope - Simple English Wikipedia, the free encyclopedia
WEBAn isotope is usually named by giving the element and the mass number. For example, the symbol for carbon is C and all carbon atoms have 6 protons. The most common isotope of carbon also has 6 neutrons, giving a mass number of 12, and it is written carbon-12 or 12 C. The isotope of carbon that has 8 neutrons is written carbon-14 or 14 C.
Isotopes of hydrogen - Wikipedia
WEBThe three most stable isotopes of hydrogen: protium (A = 1), deuterium (A = 2), and tritium (A = 3).
Isotopes of carbon - Wikipedia
WEBCarbon (6 C) has 14 known isotopes, from 8C to 20C as well as 22C, of which 12 C and 13 C are stable. The longest-lived radioisotope is 14 C, with a half-life of 5.70 (3)×103 years. This is also the only carbon radioisotope found in nature, as trace quantities are formed cosmogenically by the reaction 14N + n → 14C + 1H.
isotope summary | Britannica
WEBisotope , One of two or more species of atoms of a chemical element having nuclei with the same number of protons but different numbers of neutrons. They have the same atomic number and hence nearly identical chemical behaviour but different atomic masses.
Explainer: what is an isotope? - The Conversation
WEBJan 11, 2013 · An atom is composed of an incredibly dense core (called a nucleus) of protons and neutrons, surrounded by a diffuse cloud of electrons. You can think of protons and neutrons as the same kind of...
What Is an Isotope? Definition and Examples - Science Notes …
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.
Isotope Basics | NIDC: National Isotope Development Center
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.
What are Isotopes? | IAEA - International Atomic Energy Agency
WEBAug 19, 2022 · Atoms with the same number of protons but different numbers of neutrons are called isotopes. They share almost the same chemical properties, but differ in mass and therefore in physical properties. There are stable isotopes, which do not emit radiation, and there are unstable isotopes, which do emit radiation.