vsper

[theedaddy77]

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if given a question like this
"According to VSEPR Theory, the H-Te-H bond angle
in H2Te should be closest to"
how would u answer it?
is it asking for molecular or electronic geometry?
how can you tell?

 

[userah]

umm i would guess the angle to be around 120. The two lone pair of electrons on Te push the hydrogen bonds into a "bent" shape, giving you an angle around 120. Someone chime in if i'm completely off base here...haha

 

[Zerconia2921]

if given a question like this
"According to VSEPR Theory, the H-Te-H bond angle
in H2Te should be closest to"
how would u answer it?
is it asking for molecular or electronic geometry?
how can you tell?

Hmm i think its bent
Te has 6 valence e-
H has 1 valence e-

H2Te total 8 valence e-

Te is sp3 hybrid so if all e- were bonded it would be 109.4 but since only two are bonded it would be like water bent.

 

[userah]

haha i guess i was half right with the "bent idea" then. just not right with the angle...120 i think is more for trigonal planar or tetrahedral molecules

 

[Dencology]

it is bent just like H2O. since TE is in the same group as O it has the O characteristics and therefore, form 120 angle. hope this would help.

 

[theedaddy77]

it seems that when the questions says what does vsper say (not mentioning electronic or molecular) you guys assume it is molecular. IS that a correct assumption to make?

 

[Zerconia2921]

it is bent just like H2O. since TE is in the same group as O it has the O characteristics and therefore, form 120 angle. hope this would help.

Water is not 120 its 104.5 degrees

120 is for trigonal planar