H2O VSEPR

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Lily Mohtashami
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H2O VSEPR

Postby Lily Mohtashami » Wed Nov 25, 2020 3:52 pm

What would be the shape of H2O? Is it tetrahedral or Trigonal Pyramidal??

Abril Guanes 2A
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Re: H2O VSEPR

Postby Abril Guanes 2A » Wed Nov 25, 2020 3:58 pm

H2O would actually be bent shape because the two electron pairs from the oxygen will push the bonds between hydrogens down, giving it a bent shape.

Minh-Thy Vo 3D
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Re: H2O VSEPR

Postby Minh-Thy Vo 3D » Wed Nov 25, 2020 4:02 pm

H20 would be bent because it has 2 lone pairs pushing down on the bonds between the oxygen and the hydrogen.

manisha_joseph_1H
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Re: H2O VSEPR

Postby manisha_joseph_1H » Wed Nov 25, 2020 4:23 pm

Water would actually have a bent shape due to the two lone pairs of electrons present on the oxygen molecule, pushing the hydrogen atoms down further which results in a shift from a linear molecule to a bent molecule.

KhanTran3K
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Re: H2O VSEPR

Postby KhanTran3K » Wed Nov 25, 2020 4:25 pm

Hey!
Although there are 4 bonding regions for H20, there are still 2 lone pairs. This makes the shape of the molecule bent since the two lone pairs are pushing the electrons from the two bonded atoms. Also, this would make the angles between the molecules less than 109.5. Hope this helps!

Kristina Krivenko 3I
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Re: H2O VSEPR

Postby Kristina Krivenko 3I » Wed Nov 25, 2020 6:57 pm

Hi! It's important to differentiate between the arrangement of electron densities and the shape of a molecule.

H2O has 4 regions of electron densities. Therefore, it has tetrahedral arrangement of electron densities.

However, because 2 of them are lone pairs, the shape of the molecule is bent.

Austin Aldujaili 2D
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Re: H2O VSEPR

Postby Austin Aldujaili 2D » Wed Nov 25, 2020 7:00 pm

Remember when trying to figure out molecular shape, you only want to consider the amount of atoms present, not the amount of e- densities. So H20 has only two atoms branching from the central atom, making it bent with its lone pairs.

Ralph Zhang 2L
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Re: H2O VSEPR

Postby Ralph Zhang 2L » Wed Nov 25, 2020 7:58 pm

Only the atoms matter so there's not enough to form either of those shapes you mentioned.

Laura 3l
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Re: H2O VSEPR

Postby Laura 3l » Wed Nov 25, 2020 9:02 pm

H20 would have a bent shape since there are 4 electron domains; 2 being lone pairs and the other two being bonds.

Kaili Valenzuela 2B
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Re: H2O VSEPR

Postby Kaili Valenzuela 2B » Wed Nov 25, 2020 10:14 pm

The shape would be bent because there are the two hydrogens attached to the central oxygen atom, but there are 2 lone pairs of electrons also attached to the atom. Since the electron repulsion between two lone pairs is greater than the repulsion of two bonding pairs they will shift the two hydrogens bonded closer together to form a bent shape rather than a linear one.

ellenulitsky Dis 1I
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Re: H2O VSEPR

Postby ellenulitsky Dis 1I » Thu Nov 26, 2020 10:28 am

H2O has an AX2E general formula, which is a bent shape! Hope that helps.

Ariel Guan 1H
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Re: H2O VSEPR

Postby Ariel Guan 1H » Thu Nov 26, 2020 3:25 pm

none of the above. it would be bent because there are 2 lone pairs

Anastasia Yulo 1C
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Re: H2O VSEPR

Postby Anastasia Yulo 1C » Sat Nov 28, 2020 12:09 pm

Becase H2O has 2 lone pairs, it has a AX2E generic formula. This is a bent shape.
Remember that A is the central Atom, X is the # of bonded atoms, and E is the # of lone pairs

This chart is very helpful in recognizing the shapes: https://www.templateroller.com/template ... chart.html

Namratha Gujje
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Re: H2O VSEPR

Postby Namratha Gujje » Sat Nov 28, 2020 12:15 pm

H20 has a bent shape due to the two lone pairs on the oxygen. Due to electron repulsion the hydrogens bonds would be pushed down.

Mackenzie Stockton 2H
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Re: H2O VSEPR

Postby Mackenzie Stockton 2H » Sat Nov 28, 2020 4:03 pm

it would be bent

there are 4 total electron density regions, with two being lone pair electrons and 2 being bonds

Sophia Spungin 2E
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Re: H2O VSEPR

Postby Sophia Spungin 2E » Sat Nov 28, 2020 5:54 pm

A molecule with 4 regions of electron density, 2 lone pairs, and 2 bonding pairs, is bent. However, I believe that this could be characterized as having tetrahedral arrangement of electron density.

Colin Squire 3B
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Re: H2O VSEPR

Postby Colin Squire 3B » Sat Nov 28, 2020 6:54 pm

Since there are three domains of electron density, one of which being a lone pair, the shape will be bent (or angular) since the lone pair pushes down on the hydrogens.

Savannah Torella 1L
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Re: H2O VSEPR

Postby Savannah Torella 1L » Sun Nov 29, 2020 10:08 pm

H2O has a bent shape because it has two outer atoms (the two hydrogens that it bonds to) and two lone pairs (the 2 lone pairs from oxygens).

DominicMalilay 1F
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Re: H2O VSEPR

Postby DominicMalilay 1F » Sun Nov 29, 2020 10:50 pm

Because of the lone pairs forming electron repulsion, it takes on a bent shape.

nayha a 1E
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Re: H2O VSEPR

Postby nayha a 1E » Sun Nov 29, 2020 10:52 pm

Hi! H2O would actually have a bent shape due to the 2 lone pairs and 2 bonding pairs.

joshtully
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Re: H2O VSEPR

Postby joshtully » Sun Nov 29, 2020 11:38 pm

H2O would be bent because of the lone pairs.

Ke Huang 2G
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Re: H2O VSEPR

Postby Ke Huang 2G » Sun Nov 29, 2020 11:39 pm

It would be bent because it has two lone pairs and two bonds.

Thomas Gimeno
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Re: H2O VSEPR

Postby Thomas Gimeno » Sun Nov 29, 2020 11:41 pm

The shape would be bent. Shape only looks at the position of bonds and not the position of lone pairs. Even though H2O only has two bonds, it is still sp3 because it has two bonds and two lone pairs, I think this may be why you thought it was tetrahedral.

rita_debbaneh2G
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Re: H2O VSEPR

Postby rita_debbaneh2G » Sun Nov 29, 2020 11:42 pm

There's one central atom (A), two interactions occurring on account of the bonding with two hydrogen atoms (B2), and two lone pairs on the central atom (E2). Upon examining the molecule with the geometry of AB2E2, the descriptor is bent.

Andy Hernandez
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Re: H2O VSEPR

Postby Andy Hernandez » Sun Nov 29, 2020 11:45 pm

Although there are 4 bonding regions for H20, there are still 2 lone pairs, makes the shape of molecule bent since the two lone pairs are pushing the electrons from the two bonded atoms

Gian Boco 2G
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Re: H2O VSEPR

Postby Gian Boco 2G » Sun Nov 29, 2020 11:46 pm

2 lone pairs and 2 bonding domains on the central atom in O for H2O forms a "bent" shape

Megan ODonnell 3F
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Re: H2O VSEPR

Postby Megan ODonnell 3F » Sun Nov 29, 2020 11:48 pm

H2O is bent since there are two bonds formed and two lone pairs which force the bonded oxygens closer to each other.

Griffin G
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Re: H2O VSEPR

Postby Griffin G » Sun Nov 29, 2020 11:58 pm

H2O is bent, because of the 2 lone pairs on the oxygen.


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