Seesaw vs. trigonal pyramidal
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Re: Seesaw vs. trigonal pyramidal
No, while seesaw has 5 regions of high electron density, trigonal pyramidal only has 4 regions of high electron density. Hope this helps!
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Re: Seesaw vs. trigonal pyramidal
No. Trigonal pyramidal is when you make one of the bonding pairs on a tetrahedral shaped molecule a lone pair, so there are three bonding pairs connected to a central atom with bond angles of a <109.5deg.
Seesaw is when you remove one bonding pair from the equatorial of a trigonal bipyramidal and make it into a lone pair. It has four bonding pairs connected to a central atom, with bond angles of 90 and 120.
Seesaw is when you remove one bonding pair from the equatorial of a trigonal bipyramidal and make it into a lone pair. It has four bonding pairs connected to a central atom, with bond angles of 90 and 120.
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Re: Seesaw vs. trigonal pyramidal
Hi, they are not the same! See saw has 1 lone pair and 4 bonding pairs and trigonal pyramidal has 1 lone pair and 3 bonding pairs.
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Re: Seesaw vs. trigonal pyramidal
What Ashley said was correct, and:
-See-saw has bond angles of <90 and <120
-Trigonal pyramidal has bond angles of <107.5
-See-saw has bond angles of <90 and <120
-Trigonal pyramidal has bond angles of <107.5
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Re: Seesaw vs. trigonal pyramidal
Shannon Moore 2L wrote:Are seesaw and trigonal pyramidal the same shape? I am confused
Hi! No, seesaw and trigonal pyramidal are not the same shape. As aforementioned, seesaw has one lone pair and four bonding pairs while trigonal pyramidal has one lone pair and three bonding pairs. I have attached a picture of a table which I have found very helpful for memorizing molecular shape. Hope this helps!
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Re: Seesaw vs. trigonal pyramidal
trigonal pyramidal is roughly the same bond angles as a tetrahedral, 109.5, but there is not a 4th peripheral atom in one spot. Seesaw is derived from he trigonal bipyramidal, where there is on lone pair in the plane with 2 other atoms.
Re: Seesaw vs. trigonal pyramidal
I think seesaw is when 4 out of 5 are occupied, while trigonal pyramidial is when 3 out of 4 spots are occupied. Seesaw usually has bond wth 4 atoms and one pair of lone pair; trigonal pyramidal is when bonding wit 3 atoms and one pair of lone pair.
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Re: Seesaw vs. trigonal pyramidal
Seesaw and trigonal pyramidal are not the same shape. Seesaw has 5 regions of electron density (1 of which is a lone pair while 4 are bonding pairs). Trigonal pyramidal has 4 regions of electron density (1 of which is a lone pair while 3 are bonding pairs).
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Re: Seesaw vs. trigonal pyramidal
They are not the same shape. Both have one of their regions of electron densities as a lone pair, but seesaw has 5 regions while trigonal pyramidal has 4.
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Re: Seesaw vs. trigonal pyramidal
Trigonal Pyramidal is the shape of a central atom that has 3 atoms bonded to it and one lone pair, while the seesaw shape forms when a molecule has one electron pair with 4 atoms bonded to the central atom.
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Re: Seesaw vs. trigonal pyramidal
Brandon Pham 1K wrote:What Ashley said was correct, and:
-See-saw has bond angles of <90 and <120
-Trigonal pyramidal has bond angles of <107.5
Hi! Could you tell me how you figured out how bond angles were 107.5 - I thought it would be < 109.5 since there's a tetrahedral electron arrangement.
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Re: Seesaw vs. trigonal pyramidal
Seesaw has 5 regions of electron density whereas trigonal planar has 4 regions of electron density.
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Re: Seesaw vs. trigonal pyramidal
Catie Donohue 3I wrote:Brandon Pham 1K wrote:What Ashley said was correct, and:
-See-saw has bond angles of <90 and <120
-Trigonal pyramidal has bond angles of <107.5
Hi! Could you tell me how you figured out how bond angles were 107.5 - I thought it would be < 109.5 since there's a tetrahedral electron arrangement.
Oh sorry. I believe both are correct. For the test, I think he'd use <109.5, sorry for the discrepancy.
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Re: Seesaw vs. trigonal pyramidal
seesaw has 1 lone pair and 4 bonding pairs, that's a total of 5 areas of electron density.
trigonal pyramidal has 1 lone pair and 3 bonding pairs, that's a total of 6 electron density. hope that helps!
trigonal pyramidal has 1 lone pair and 3 bonding pairs, that's a total of 6 electron density. hope that helps!
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Re: Seesaw vs. trigonal pyramidal
Seesaw its a trigonal by pyramidal shape with one lone pair, while trigonal pyramidal is a tetrahedral with one lone pair.
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Re: Seesaw vs. trigonal pyramidal
No, seesaw and trigonal pyramidal are not the same shape. Seesaw has 4 bonding pairs and 1 lone pair while trigonal pyramidal has 3 bonding pairs and 1 lone pair.
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Re: Seesaw vs. trigonal pyramidal
No, in regards to molecular shape, see-saw and trigonal pyramidal are not the same thing. The main difference between them is that they have different amounts of regions of electron density where a see-saw molecule has 5 while a trigonal pyramidal molecule has 4, which corresponds to a steric number of 5 and 4, respectively. Although both of them have only one lone pair, the difference in the amount of atoms results in different molecular shapes. Also note that because of the lone pair in both shapes, the bond angles will be less than their typical values. To be more specific, the bond angles in a trigonal pyramidal would be less than 109.5 degrees. On the other hand, those in a see-saw would be less than 90 and 120 degrees.
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Re: Seesaw vs. trigonal pyramidal
Hi! They aren’t the same shape; seesaw has 5 regions of electron density, one of which is a lone pair (AX4E), whole trigonal pyramidal has 4 regions of electron density, one of which is a lone pair (AX3E).
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Re: Seesaw vs. trigonal pyramidal
They aren't the same! One refers to a # of 5, the other to a 4. Others have explained shape!
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Re: Seesaw vs. trigonal pyramidal
They are two different shapes because the seesaw has 5 regions of electron density, trigonal pyramidal only has 4 regions of electron density.
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Re: Seesaw vs. trigonal pyramidal
No, seesaw and trigonal pyramidal are not the same. The seesaw shape has a lone pair in the equatorial position whilst the trigonal pyramidal shape does not have a lone pair.
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