/sci/ - Science & Math

File: 15 KB, 400x300, uranium vi flouride.jpg [View same] [iqdb] [saucenao] [google]

Anonymous Sun Oct 7 23:49:19 2012 No.5130955 [Reply] [Original]

Evening /sci/entists. So I was trying to explain to a friend of mine why different compounds of the same element can have such different physical properties (such as how uranium (iii) flouride has a melting point at 1000 degrees C, but uranium (vi) flouride is a gas at 60 degrees C). But all I could really come up with was "Well, they're just two different compounds with different properties."

>tldr: why exactly do compounds have different physical properties?

Anonymous Sun Oct 7 23:57:35 2012 No.5130975

>>5130955
Changes in the shapes of combined electron clouds. This leads to changes in shape of molecules, changes in shape of crystalline structure ect.

Besides, Uranium is fucking weird because its on the upper end of the molecular weight scale. And fluorine is a mad dog powerhouse of an element.

>>	Anonymous Sun Oct 7 23:59:20 2012 No.5130984 >>5130975 >And fluorine is a mad dog powerhouse of an element. Made my night.

>>	Anonymous Mon Oct 8 00:02:19 2012 No.5130994 Different molecular orbitals, different shapes and different reactions. It's as "simple" as that.

ikkymjnatti Mon Oct 8 00:05:04 2012 No.5131004

>>5130955
You can also use polarity and the elctro-negativy scale, and isomerism to help define some physical properties, such as water expanding when it becomes ice, or brittle and malleable substances.
And yes, fluorine is a huge cock mangler of an element

>>	Anonymous Mon Oct 8 00:05:19 2012 No.5131003 OP here, I appreciate the responses.

>>	Anonymous Mon Oct 8 00:08:06 2012 No.5131016 Only thing in chemistry more frightening than fluorine is a benzine ring.

>>	Anonymous Mon Oct 8 00:17:49 2012 No.5131038 File: 84 KB, 541x599, 541px-Hexafluorobenzene-3D-balls.png [View same] [iqdb] [saucenao] [google] >>5131016 Behold, hexafluorobenzene! Where is your god now?

>>	Anonymous Mon Oct 8 00:20:19 2012 No.5131051 Ever been around when an oleum tank starts to outgas?.

>>	Anonymous Mon Oct 8 00:20:34 2012 No.5131053 ffs, I learned this shit first month of fucking Bio in 9th grade...

>>	Anonymous Mon Oct 8 00:20:49 2012 No.5131055 >>5131038 Laughed so hard i woke up the wife.

>>	Anonymous Mon Oct 8 00:22:19 2012 No.5131065 File: 11 KB, 299x247, Octanitrocubane.png [View same] [iqdb] [saucenao] [google] >>5131016 Start running.

>>	Anonymous Mon Oct 8 00:26:20 2012 No.5131077 >>5131055 No you don't.

>>	Anonymous Mon Oct 8 00:34:05 2012 No.5131102 File: 8 KB, 300x142, methyl_group.png [View same] [iqdb] [saucenao] [google] I heard you talking about some bat shit insane compounds

>>	Anonymous Mon Oct 8 00:41:34 2012 No.5131127 >>5131102 Why is a methyl group crazy?

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