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Build an atom out of protons, neutrons, and electrons, and see how the element, charge, and mass change. Then play a game to test your ideas!
- Build an Atom
Explore the interactive simulation to build and understand...
- Build an Atom
This quiz helps you practice naming, determining notation, and counting subatomic particles for hundreds of elements and isotopes.
Interactive periodic table showing names, electrons, and oxidation states. Visualize trends, 3D orbitals, isotopes, and mix compounds. Fully descriptive writeups.
Explore isotopes and atomic mass through an interactive simulation on PhET.
Kids learn about the science of isotopes in chemistry including naming isotopes, hydrogen, examples, fun facts, unstable, and stable.
27 Απρ 2023 · An atom is neutral when it contains equal numbers of electrons and protons. Isotopes of an element are atoms with the same atomic number but different mass numbers; isotopes of an element, therefore, differ from each other only in the number of neutrons within the nucleus.
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.
