Nuclide Notation
Part of the Atomic Structure section of Coddy's Chemistry journey. Lesson 14 of 45.
The mass number goes at the top left of the symbol, the atomic number at the bottom left, and any charge at the top right.
Chlorine-37 in nuclide notation
³⁷₁₇Cl has 17 protons, 20 neutrons and 17 electrons. The symbol already gives the atomic number, so it is often left out: ³⁷Cl.
¹⁶O²⁻ has 8 protons, 8 neutrons and 10 electrons.
An ion carries its charge at the top right
Challenge
A chemistry book lists four particles: ¹⁹₉F, ³⁷₁₇Cl, ²⁷₁₃Al³⁺ and ³¹₁₅P. Build each one.
Try it yourself
Atom builderBuild F, Cl, Al3+, P
Test yourselfThis lesson includes a short quiz. Start the lesson to answer it and track your progress.
All lessons in Atomic Structure
1Matter and Atoms
What Everything Is Made OfElements, Compounds, MixturesChemical SymbolsCounting Atoms in a FormulaRecap - Molecule Kit