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  1. Isotope - Wikipedia

    From left to right, the isotopes are protium (1 H) with 0 neutrons, deuterium (2 H) with 1 neutron, and tritium (3 H) with 2 neutrons. Isotopes are distinct nuclear species (or nuclides) of the same chemical …

  2. Isotope | Examples & Definition | Britannica

    4 days ago · What is an isotope? An isotope is 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 …

  3. What Is an Isotope? Definition and Examples

    Sep 13, 2019 · An isotope is one of two or more forms of an element that have the same number of protons but different numbers of neutrons in the nucleus. Because they have the same number of …

  4. What is an Isotope? - ChemTalk

    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 …

  5. What Are Isotopes? Atomic Structure and Isotope Notation Explained

    Learn what isotopes are, how they differ by neutrons, and how to write isotope notation in this clear, student-friendly chemistry lesson.

  6. Isotope Basics | NIDC: National Isotope Development Center

    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, …

  7. 4.18: Isotopes - Chemistry LibreTexts

    Isotopes are atoms that have the same number atomic number, but different mass numbers due to a change in the number of neutrons. The three isotopes of carbon can be referred to as carbon-12 (6 …

  8. Isotope Notation — Overview & Examples - Expii

    Isotopes are atoms that have the same atomic number but different mass numbers due to the different number of neutrons they contain. There could be two or more isotopes that fall under the same …

  9. Isotope | Nuclear Regulatory Commission - NRC

    Among their distinct physical properties, some isotopes (known as radioisotopes) are radioactive because their nuclei emit radiation as they strive toward a more stable nuclear configuration. For …

  10. What are Isotopes? | IAEA

    Aug 19, 2022 · Like everything we see in the world, isotopes are a type of atom, the smallest unit of matter that retains all the chemical properties of an element. Isotopes are forms of a chemical …