Isotope - Wikipedia
网页The fact that each isotope has one proton makes them all variants of hydrogen: the identity of the isotope is given by the number of protons and neutrons. From left to right, the isotopes are protium ( 1 H) with zero neutrons, deuterium ( 2 H) with one neutron, and tritium ( 3 H) with two neutrons.
Isotope | Examples & Definition | Britannica
网页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 …
What Is an Isotope? Definition and Examples - Science Notes …
网页2019年9月13日 · 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.
What is an Isotope? - ChemTalk
网页What is an isotope? An 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.
Isotope Basics | NIDC: National Isotope Development Center
网页Isotopes are atoms of the same element that have the same number of protons (i.e., atomic number, "Z") but a different number of neutrons, meaning that their mass number, "A", varies. Take hydrogen, for example.
DOE Explains...Isotopes | Department of Energy
网页Isotopes are members of a family of an element that all have the same number of protons but different numbers of neutrons. The number of protons in a nucleus determines the element’s atomic number on the Periodic Table. For example, carbon has six protons and is atomic number 6.
What Is an Isotope? - HowStuffWorks
网页2023年6月9日 · What Is an Isotope? By: Mark Mancini | Updated: Jun 9, 2023. Each isotope is named on the basis of its mass number, which is the total combined number of neutrons and protons in an atom. Wikimedia Commons. Atoms are the "building blocks of matter."
4.18: Isotopes - Chemistry LibreTexts
网页Isotopes are atoms that have the same atomic number, but different mass numbers due to a change in the number of neutrons. The term nuclide refers to the nucleus of a given isotope of an element. The atomic mass of an atom equals the sum of the protons and the neutrons.
Explainer: what is an isotope? - The Conversation
网页2013年1月11日 · Isotopes of an element share the same number of protons but have different numbers of neutrons. Let’s use carbon as an example. There are three isotopes of carbon found in nature – carbon-12 ...
PERIODIC TABLE OF THE ISOTOPES - International Union of …
网页To introduce students and teachers to the existence and importance of isotopes of the chemical elements, CIAAW has created the Periodic Table of the Isotopes. The Periodic Table of the Isotopes is designed to help teachers and students understand that atomic weights are not constants of Nature.