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Space-filling molecular models: Halogen expansion set

a0d415f4ee2425e63c321ca196339360_preview_featured.jpg Space-filling molecular models: Halogen expansion set
d34eae7e2df51565017bfdd2e2aa37ec_preview_featured.jpg Space-filling molecular models: Halogen expansion set
Bromine1.stl Space-filling molecular models: Halogen expansion set
Chlorine1.stl Space-filling molecular models: Halogen expansion set
Fluorine1.stl Space-filling molecular models: Halogen expansion set
Iodine1.stl Space-filling molecular models: Halogen expansion set
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Creation quality: 5.0/5 (1 vote)
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3D design format
STL Folder details Close
  • Bromine1.stl
  • Chlorine1.stl
  • Fluorine1.stl
  • Iodine1.stl

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Publication date 2018-02-08 at 10:16
Design number 20996
harfigger

harfigger

3D printer file info

3D model description

The halogens are one of the best reasons for using space-filling models. With ball-and-stick models and especially writing structures on paper, you can easily convince yourself that all the atoms are about the same size. With most of the halogens, this decidedly doesn't apply. Most of them are several times larger than carbon or nitrogen. Granted they are further down the periodic table so you would expect them to be larger, but it's still surprising how much larger they are. "Are they really that weird shape?" I hear you ask. Probably not; we don't know exactly what they look like. They are probably more spherical, but they can crowd nearby atoms so some allowances are made. "I thought one of the points of space-filling models was to tell when things get too close together." True, but they don't crowd other atoms that much, and atomic orbitals seem to be more compliant than ABS (it would be interesting to try using flexible filament). Bromine is traditionally brown but I didn't have any brown filament (and I think I like it in gold).

3D printing settings

Printer:

Da Vinci 1A

Rafts:

No

Supports:

Doesn't Matter

Resolution:

0.2 mm

Infill:

5%, 10% for fluorine

Notes:
Three perimeters works well

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