VSEPR Trigonal Planar Geometry
BF3 (boron trifluoride) is a molecule representative of trigonal planar geometry & is roughly 300mm (12") along any 2 arms of the molecule when constructed with Unit models.
Compare this to the model from the smaller Orbit Basic VSEPR theory set; the same structure is only 50mm (2") along any 2 arms of the molecule.
Current Reviews: 1
Click here for related information or images2 Pegs-Bent Angle, 2 Pegs-Linear, 3 Pegs-Trigonal Planar, 4 Pegs-Tetrahedral, 5 Pegs-Trigonal Bipyramidal, 6 Pegs-Octahedral,
|69388C||Atom, Unit, 25mm, white (hydrogen)||4|
|69390C||Atom, Unit, 45mm, blue (nitrogen)||1|
|69391C||Atom, Unit, 45mm, red (oxygen)||2|
|69392C||Atom, Unit, 45mm, black (carbon)||3|
|69393C||Atom, Unit, 45mm, green (halogen)||16|
|69395C||Atom, Unit, 45mm, yellow (sulfur)||2|
|69400||Unit Bond Pegs: 72 pieces: (36 tetra; 24 radial;12 polar)||1|
|69150-60||Unit Blue Plastic Bond, 60mm||4|
|69150-80||Unit Blue Plastic Bond, 80mm||18|
5 Stars 2016-12-13
I recently moved to the UK from the US and needed some classroom-demonstration models. In the US, I had used the horrible polystyrene balls and wooden sticks that were/are so prevalent. They were awkward to use and very fragile. Indeed, after only typically 2-3 uses of a given central atom, at least one "hole" for the sticks had broken. No such issues with the Indigo kit. While it was initially a little tiresome to set up the 5- and 6- coordinate central atoms, they are sturdy and have not (to date) broken. They are easy to transport and visually more appealing than the ones I used previously. While the price might seem a little steep, it is worth it to have a great classroom tool and I recommend them wholeheartedly.
Thanks for the feedback.