12 each p & pi orbitals or lone pairs for Molymod atoms. These come included in our Ultimate Student Organic Chemistry Molecular Model Set.
|62053Sp||Molecular Model Set 62053 + bio upgrade+p/pi orbitals||1|
I'm Brazilian and a chemistry teacher and I needed this demonstration for my molymod kits in my chemical and organic bonds classes, molymod products are exceptional, the best on the market. Thank you very much to Indigo for shipping to Brazil.