Classroom Demonstration Models
Unit style molecular models with 45mm diameter atoms.
Really BIG models visible in large Lecture Halls.
Unit style molecular models are our most versatile. They can be used for organic/inorganic, VSEPR, point group or lattice structures. Unit atoms are 45mm diameter & make giant models visible at the back of large lecture halls.
Unit atoms were designed for crystal lattice and are configurable for 1-6, 8 & 12 coordinate geometries.
The Unit system is unique in that any atom can take on any geometry. Below are just a few of the ways the atoms & pegs can be combined.
Unit Peg Placements & Atom Geometries
Examples of Where Used
Polar Pegs (On Right)
Radial Pegs (Middle)
Angled Pegs (On Left)
Left Column: Tetrahedral with 4 angled (4/8 )
Centre Column: Tri-Bi with 3 radial, 2 polar
Right Column: Octahedral w/ 4 radial, 2 polar
Any Unit atom can show univalence using 1 of the 3 different pegs. Combinations of these 3 pegs can produce any geometry from divalent to trigonal up to octahedral.
Watch the video below to see how easy it is to make any molecular geometry from any Unit atom.
Trigonal/Trigonal Bipyramidal Atoms
Tetrahedral/Trigonal Pyramidal Atoms