Jan 23, 2026 · 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 …

Sep 13, 2019 · Isotopes share the same chemical properties but may have different nuclear stability and physical properties. Some isotopes are stable, while others are radioactive and undergo decay.

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 …

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

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 …

Sep 22, 2024 · Definition: Atoms of an element which have the same atomic number but different mass numbers are called isotopes of that element. These isotopes are variants of the same element in …

May 29, 2024 · Isotopes are variants of a particular chemical element that share the same number of protons but differ in the number of neutrons. This fundamental concept is crucial in various fields of …

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.

Aug 31, 2025 · Understanding isotopes sheds light on the subtle diversity within the atomic world. Isotopes are different versions of the same chemical element. They are atoms with the same number …

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 …