Molecular Network Solid

[kfcman289]

How many Hydrogens is each each Oxygen bonded to in ice (a molecular network solid)? I know that in SiO2, a covalent network solid, each Si is bonded to 4 O's.
Thanks

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[kfcman289]

bum0

 

[lumpyduster]

If you look at a picture of ice on google, you will see that it is covalently bonded to one oxygen, but hydrogen bonds to another oxygen. I think each oxygen hydrogen bonds to 2 hydrogens and covalently bonds to 2 hydrogens for a total of 4 hydrogens.

http://www.tony5m17h.net/icecrystal.gif

 

[Czarcasm]

How many Hydrogens is each each Oxygen bonded to in ice (a molecular network solid)? I know that in SiO2, a covalent network solid, each Si is bonded to 4 O's.
Thanks

Ice results in a highly ordered structure with a maximum of 6 H2O molecules forming a highly ordered ring; in water this ring will vary in size. Individually however, each oxygen has two lone pairs which can each form/readily accept 1 hydrogen bond interaction with a neighboring water molecule.

 

[kfcman289]

If you look at a picture of ice on google, you will see that it is covalently bonded to one oxygen, but hydrogen bonds to another oxygen. I think each oxygen hydrogen bonds to 2 hydrogens and covalently bonds to 2 hydrogens for a total of 4 hydrogens.

http://www.tony5m17h.net/icecrystal.gif

But wouldnt this put a positive charge on the oxygen of +2?

 

[lumpyduster]

But wouldnt this put a positive charge on the oxygen of +2?

No. When the lone pairs interact with the hydrogens of other water molecules they are are not covalent bonds but hydrogen bonds. Hydrogen bonds do not affect formal charge.