Bond Angles

[polarmolar]

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Kaplan says: H - Te - H bond angles is closest to 109.5 degrees, while on wikipedia it says 90 degrees. Who to trust?

 

[Electrons]

Kaplan says: H - Te - H bond angles is closest to 109.5 degrees, while on wikipedia it says 90 degrees. Who to trust?

Kaplan is correct. Te has 6 val e-, 2 is spent already so it has 4 val e- left. That also means each 2e- goes to 1 orbital, hence it is a bent or at most a tetrahedral config.

Wiki is created by volunteers and they do have mistypo and can make mistake.

 

[Danny289]

Kaplan says: H - Te - H bond angles is closest to 109.5 degrees, while on wikipedia it says 90 degrees. Who to trust?

Just think bout H2O, "Te" and "O" are in same group, then share same properties.
angles will be close to 109 degrees.

 

[polarmolar]

Just think bout H2O, "Te" and "O" are in same group, then share same properties.
angles will be close to 109 degrees.

Yea, but when I looked it up on Wikipedia to make sure, it has it as a 90 degree angle:

http://en.wikipedia.org/wiki/H2Te

H2Te is chemically similar to hydrogen selenide, both are reactive, acidic species with H-X-H angles approaching 90°.

 

[Colos]

the formula for this shape is AX2E2...Just like water it has 2 bonds and 2 lone pairs, thus the structure is identical to being tetrahedral (sp3), thus it has to be 109.5 degrees.
Just like the profs always say, don't always trust wiki...you can use it, but never quote it for a report 😛.

 

[Danny289]

the formula for this shape is AX2E2...Just like water it has 2 bonds and 2 lone pairs, thus the structure is identical to being tetrahedral (sp3), thus it has to be 109.5 degrees.
Just like the profs always say, don't always trust wiki...you can use it, but never quote it for a report 😛.

just remeber. we say close to 109.5 actualy the angles in H2O are 104.5! 👍

 

[IDK]

^and if I remember correctly, that's because the lone pairs occupy more space (or something like that - it's been a long time since my structure and bonding course).

 

[keliao]

http://intro.chem.okstate.edu/1314F00/Lecture/Chapter10/VSEPR.html remember the angles.

 

[keliao]

what's the bond anglees for HCl??? its one bonding with 3 lonepairs.

 

[doc3232]

what's the bond anglees for HCl??? its one bonding with 3 lonepairs.

there is none for geometric, but for electronic it would be about 102. I doubt they would ask this though.