Trigonal Pyramid vs Trigonal Planar
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Trigonal Pyramid vs Trigonal Planar
Is there a difference between these two shapes and if you were to put one or the other on the exam, would it affect our grade?
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Re: Trigonal Pyramid vs Trigonal Planar
Trigonal planar has just three areas of electron density. Trigonal pyramidal has four areas of electron density, one of those areas being a lone pair.
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Re: Trigonal Pyramid vs Trigonal Planar
If there is a lone pair on the central atom, it makes the overall shape trigonal pyramidal, if there are no lone pairs on the central atom it's planar pretty sure.
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Re: Trigonal Pyramid vs Trigonal Planar
Trigonal planar is in one plane and has three areas of e density while trigonal pyramidal is 3d and has 4 areas.
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Re: Trigonal Pyramid vs Trigonal Planar
Also the bond angle is different. Trigonal planar has bond angles of 120 while trigonal pyramidal has bond angles of around 107, so these two are absolutely different.
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Re: Trigonal Pyramid vs Trigonal Planar
They are two completely different shapes. Trigonal planar has no lone pairs and 3 bonded pairs while trigonal pyramidal has 1 lone pair and 3 bonded pairs.
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Re: Trigonal Pyramid vs Trigonal Planar
They are different shapes! Trigonal planar has three regions of electron density, all being bonded pairs. Trigonal pyramidal has four regions of electron density, but with three bonded pairs and one lone pair. Hope this helps!
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