Definitions for isotopeˈaɪ səˌtoʊp
This page provides all possible meanings and translations of the word isotope
Random House Webster's College Dictionary
one of two or more forms of a chemical element having the same number of protons, or the same atomic number, but having different numbers of neutrons, or different atomic weights.
Category: Common Vocabulary, Chemistry
Origin of isotope:
1913; iso - + Gk tópos place
i•sot•o•pyaɪˈsɒt ə pi, ˈaɪ səˌtoʊ pi(n.)
one of two or more atoms with the same atomic number but with different numbers of neutrons
To define or demonstrate an isotopy of (one map with another).
Origin: Coined in 1914 by British chemist Frederick Soddy from ἴσος and τόπος, because the different isotopes of a chemical element always occupy the same position in the periodic table of elements. Compare the synonymous Icelandic word samsæta.
Isotopes are variants of a particular chemical element: while all isotopes of a given element share the same number of protons and electrons, each isotope differs from the others in its number of neutrons. The term isotope is formed from the Greek roots isos and topos. Hence: "the same place," meaning that different isotopes of a single element occupy the same position on the periodic table. The number of protons within the atom's nucleus uniquely identifies an element, but a given element may in principle have any number of neutrons. The number of nucleons in the nucleus is the mass number, and each isotope of a given element has a different mass number. For example, carbon-12, carbon-13 and carbon-14 are three isotopes of the element carbon with mass numbers 12, 13 and 14 respectively. The atomic number of carbon is 6, which means that every carbon atom has 6 protons, so that the neutron numbers of these isotopes are 6, 7 and 8 respectively.
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