This molecular model set contains sufficient parts to make the eight atomic models shown The different shapes are examples of the orientations of the bonds and cover coordination numbers 1 to 6 of atomic structures Manufacturered by Molymod. Lone electron pairs are represented by brown spheres or brown pear shaped parts The two extra pear shaped parts are included in the set to enable protonated models to be made e.g. Acid/Base theory the formation of H3O as a result of the migration of H+ from hydrogen chloride Molecular shapes - electron repulsion theory molyorbital 8 model collection set
