Buy Unit components to replace missing bonds & atoms in any of our sets or top up kits to increase model size or simply use to create custom structures.

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  • Unit White Atom 25mm
    SKU: 69388C $1.20USD or lower
    Unit White Atom 25mm
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  • Unit White Atom 45mm
    SKU: 69389C $2.10USD or lower
    Unit White Atom 45mm
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  • Unit Blue Atom 45mm
    SKU: 69390C $2.10USD or lower
    Unit Blue Atom 45mm
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  • Unit Red Atom 45mm
    SKU: 69391C $2.10USD or lower
    Unit Red Atom 45mm
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  • Unit Black Atom 45mm
    SKU: 69392C $2.10USD or lower
    Unit Black Atom 45mm
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  • Unit Green Atom 45mm
    SKU: 69393C $2.10USD or lower
    Unit Green Atom 45mm
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  • Unit Grey Atom 45mm
    SKU: 69394C $2.10USD or lower
    Unit Grey Atom 45mm
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  • Unit Yellow Atom 45mm
    SKU: 69395C $2.10USD or lower
    Unit Yellow Atom 45mm
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  • 60mm Blue Plastic Bond
    SKU: 69150-60 $0.20USD or lower
    60mm Blue Plastic Bond
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  • 80mm Blue Plastic Bond
    SKU: 69150-80 $0.30USD or lower
    80mm Blue Plastic Bond
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  • 120mm Blue Plastic Bond
    SKU: 69150-120 $0.40USD or lower
    120mm Blue Plastic Bond
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  • 180mm Blue Plastic Bond
    SKU: 69150-180 $0.60USD or lower
    180mm Blue Plastic Bond
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  • Unit Flexible Bond 90mm
    SKU: 69084C $0.80USD or lower
    Unit Flexible Bond 90mm
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  • Unit Atom Geometry Bond Pegs
    SKU: 69400 $25.00USD or lower
    Unit Atom Geometry Bond Pegs
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  • Unit White Electron Pair Paddles
    SKU: 69957C $2.50USD or lower
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  • Unit Black Electron Pair Paddles
    SKU: 69958C $2.50USD or lower
    Unit Black Electron Pair Paddles
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Any Unit atom can be built for univalence by adding one of the 3 different pegs. Combinations of these 3 pegs can produce any molecular geometry from divalent to trigonal on up to octahedral.

Watch the video below to see how easy it is to make any molecular geometry from any Unit atom.

Univalent Atoms

 

Divalent Atoms

 

Trigonal/Trigonal Bipyramidal Atoms

 

Tetrahedral/Trigonal Pyramidal Atoms