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A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes
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Atoms, symbols and the simple nuclear model

Atoms, symbols and the simple nuclear model

Labelled sodium atom showing nucleus with 11 protons and 12 neutrons, electrons arranged 2,8,1, and nuclide notation with atomic and mass numbers An atom is the smallest part of an element that can exist. In the simple nuclear model, a tiny central nucleus contains protons and neutrons, while electrons occupy shells around it.

A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes Lesson

  1. GCSE
  2. /Combined Science
  3. /A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes

Step-by-step lessons on AQA GCSE Combined Science A simple model of the atom, symbols, relative atomic mass, electronic charge and isotopes. Each one builds up to exam-style questions.