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An easy to understand model of atomic structure, this is a graphic model of all the key components of the atom including the nucleus; the particles that constitute the atom including protons, neutrons and electrons; and the electron layers. This durable plastic model is transparent for convenient use with an overhead projector. Facilitates clear comprehension of the atom’s structure and such important concepts as atomic numbers, ionic and covalent bonding, electroneutrality, the filling of electron layers and the definition and calculation of ionic load.