Flexible bond, 90mm (double bonding), Packs of ten 90mm flexible bonds to represent double bonding, Use to supplement your Unit building sets or for building custom models
Unit VSEPR Orbital Black, Model electron orbital for use with the Unit system to show the theory of VSEPR and electron orbitals, Each pack contains 6 orbitals
Organic and inorganic chemistry peg pack, A selection of pegs for building inorganic and organic compounds. Contains 72 pegs (24 radial, 12 polar and 36 tetrahedral)
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