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Author Topic: what type of bonding is likely to dominate in TeO2 and LiCl?  (Read 5427 times)

Offline ordinarypeople

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What type of bonding is likely to dominate in TeO2 and LiCl? I need to use Ketelaar triangle as a hint given and use electronegativities. Please explain to me about Ketelaar triangle as well and how it is used. Thank you.


 

Offline Supercryptid

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what type of bonding is likely to dominate in TeO2 and LiCl?
« Reply #1 on: 28/07/2010 15:22:34 »
Wikipedia gives some information about it:

http://en.wikipedia.org/wiki/Van_Arkel-Ketelaar_triangle

In general, this is what you can expect:

1) If two atoms have high electronegativities, a bond between them is likely covalent.
2) If two atoms have low electronegativities, a bond between them is likely metallic.
3) If one atom has a high electronegativity and the other a low electronegativity, a bond between them is likely ionic.

Of course, this isn't an "either or" situation. You can have bonds with character intermediate between the values (for example, a bond with character between covalent and ionic is called a polar covalent bond, such as in water).

Tellurium oxide is probably polar covalent; tellurium is of moderate electronegativity and oxygen is of high electronegativity.

Lithium chloride is definitely ionic as per rule 3.

On another note, electronegativities alone aren't always enough to tell what type of bond will be formed. Carbon has an electronegativity of 2.55 and a C-C bond is covalent. However, gold is of similar electronegativity (2.54) and an Au-Au bond is metallic. I don't know the reason for that, but I'm also a bit rusty on my chemistry.
 

Offline ordinarypeople

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what type of bonding is likely to dominate in TeO2 and LiCl?
« Reply #2 on: 21/09/2010 18:07:50 »
Thank you! That helps a lot :D
 

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what type of bonding is likely to dominate in TeO2 and LiCl?
« Reply #2 on: 21/09/2010 18:07:50 »

 

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