Definition of isotope Isotope

/ajˈsʌtowˌp/ - [aysutowp] - i•so•tope

We found 6 definitions of isotope from 5 different sources.

What does isotope mean?

WordNet

Noun Plural: isotopes
isotope - one of two or more atoms with the same atomic number but with different numbers of neutrons
		atom (nontechnical usage) a tiny piece of anything
		radioisotope a radioactive isotope of an element; produced either naturally or artificially

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Wiktionary

isotope (Noun)
Any of two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei. As a consequence, atoms for the same isotope will have the same atomic number but a different mass number atomic weight .
isotope (Verb)
To define or demonstrate an isotopy of one map with another.

OmegaWiki DictionaryOmegaWiki Dictionary Ω

isotope
Any of two or more atoms with the same atomic number that contain different numbers of neutrons.

Wikipedia

The atoms of a chemical element can exist in different types. These are called isotopes. They have the same number of protons (and electrons), but different numbers of neutrons. Different isotopes of the same element have different masses. Mass is the word for how much substance (or matter) something has. Things with different masses have different weights. Because different isotopes have different numbers of neutrons, they do not all weigh the same or have the same mass.

Different isotopes of the same element have the same atomic number. They have the same number of protons. The atomic number is decided by the number of protons. Isotopes have different mass numbers, though, because they have different numbers of neutrons.

The word isotope, meaning at the same place, comes from the fact that isotopes are located at the same place on the periodic table.

In a neutral atom, the number of electrons equals the number of protons. Isotopes of the same element also have the same number of electrons and the electronic structure. Because how an atom acts is decided by its electronic structure, isotopes are almost the same chemically, but different physically to their original atoms.

Heavier isotopes react slower than lighter isotopes of the same element. This "mass effect" is large for protium (1H) and deuterium (2H), because deuterium has twice the mass of protium. For heavier elements, the relative mass difference between isotopes is much less, and the mass effect is usually small.

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