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Water Molecule

::noahnott
09/18/06 3:51 AM GMT
Ok ok, i WANT to make a model of a water molecule...but i have 1 small problem

WHAT IS the diameter of the electron cloud of hydrogen and oxygen. This is all i will need right? other than knowing that the 2 hydrogen atoms are 104.45 degrees apart at a distance of 95.84pm.

So, um, do i look for atomic radius, atomic radius calculated, covalent radius, or vander waals radius...obviously in MY chem class we did atomic radius and that was that...

obviously if i use the atomic radius of hydrogen which is 25pm (so that would be 50pm in diameter), and the atomic diameter of oxygen which is 120pm, the electron clouds dont even touch...which i do believe they should.

This is what i've done in my bryce little thing:

1) 7.575 in the X direction, and 5.8708 in the Y direction for the H atom. -7.575 in the X for the other H.
2) Made the size of the H spheres 5.0
3) Made the size of the O sphere 12.0
4) ...they do not touch!?!?

Um, thanks for helping in advance.
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::noahnott
09/18/06 3:57 AM GMT
and btw, i tried covalent radius and that one overlaps...but i dont think it overlaps enough. (they are supposed to overlap right?
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::noahnott
09/18/06 4:22 AM GMT
Nvm, after thinking about it, making a scaled version of an atom wont look good...the electron clouds would look boring and...well you get the idea. =P

*edit* Well on 4th thought, it would look pretty good...i got a general idea of what it looks like...i think.

*edit2* Umm, this is harder than i anticipated...joining the molecules togehter is pretty tought/impossible.
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&KEIFER
09/18/06 4:32 AM GMT
I think it's against the Code of Conduct to have a conversation with yourself ...

if this is for BRYCE .. nobody, and I mean NOBODY makes their own models .. they just borrow them from the internet ... the models that are on the internet just show up on people's doorsteps during the night and then they post them

No one knows where they come from ... it's the surest sign that we are not alone in this universe
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::noahnott
09/18/06 4:41 AM GMT
Well, there's always a first. ;-) I'm not going to give up!

And I wasnt having a conversation with myself...i was merely talking with my alter ego.

*edit* Structure of First Coordination Shell in Liquid Water <-- that is getting on my nerves.

*edit2* Another thing. They only show rings of the clusters! How do the clusters go together. *grrrr*
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*caedes
09/18/06 12:44 AM GMT
Covalent shell would make sense since the atoms of O and H are sharing electrons, however we all know that the electrons inhabit fuzzy regions around the nucleus which is distinctly different from the discrete surface of a billiard ball. Therefore I would only be concerned with getting the ratio of radii accurate as well as the H-O-H angle of ~105 degrees.
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-caedes
::noahnott
09/18/06 3:57 PM GMT
Hmmm, ok. I've done that, i think, but...i'll work on it when i get back from school.
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