Bent Shapes [ENDORSED]

[carterwink2K]

Why is the structure called "bent"? How do you tell the difference between each bent molecule because there are so many of them?

[Konmal Ali 1G]

Structures are called bent when they are v-shaped or angular. For example, water is bent because it is non-collinear and the two lone pairs are located on the same side. Since repulsion occurs, the hydrogen bond is usually pushed down in a downward direction which causes it to be bent. By looking at the degrees of a molecule, you can generally determine if it is bent or not. For a molecule to be bent it is usually around 104 degrees. I hope this helps.

[Josephine B 3L]

Hi!

The structure is bent when there are one or more lone pairs on the central atom that push the bonded pairs down or to the side of the regular electron arrangement. This is because the lone pairs repel other electrons more easily than bonded electrons do, which are more stable because they're connected by two atoms not just one. These lone pairs repel the electrons of the bonded pairs a lot, and therefore take up more space in the atom and make the atom look bent compared to its regular electron arrangement that contains only bonded pairs.

I look at it like the lone pairs take up a spot in the electron arrangement and make it seem like there's a bond there even when there's not. In Topic 2E in the textbook, there's a whole diagram of different VSEPR models and whenever the shape looks asymmetrical or "bent," then there's likely a lone pair on that central atom that's taking up that space.

Hope this helps.

[Prithvi Raj 3E]

Usually, when a structure is bent, it has a lone pair or more on the central atom. This lone pair adds on to the electron repulsion, pushing all the bonds away a bit more. You can tell if a molecule is bent if it has a wonky shape. For instance, when looking at H2O, you can tell that the molecule is bent because it has a v shape instead of a liner shape.

[Acharya Ranawat 3E]

Bent shapes refer to two possible structures. One is when the total amount of electron dense regions is 3. However, one of them is a lone pair. The other is when there are 4 electron dense regions but two of them are lone pairs. The difference in bond angles is the fact the one with three electron dense regions will be slightly under 120 degrees whereas the other will be slightly under 109 .5 degrees.

[Valerie M Dis 2E]

When a structure is bent, it means that it is angular because the central atom has at least one lone pair of electrons. This is due to the fact that lone pairs have more repulsion, so in an molecule like water which is bent, the lone pair on the oxygen atom repel the hydrogen atoms which gives it a nonlinear shape.

[Anubhav_Chandla1G]

Structures are called bent because the electron-electron repulsion pushes the surrounding atoms and electrons down and away. This causes a possible linear structure to be bent shaped. An example of this is 03 since an electron pair lies on the central atom, pushing the surrounding O atoms down, creating a bent shape.

[Connor_Olsen_2K]

A structure is bent when the central molecule has two bonds and a lone pair attached. Due to the lone pair repelling the two bonds, they take an angular shape that is less than 180 degrees apart, making it look bent.

[Kayla Ziebell 1H]

The structure is bent because of the lone pairs. When there are lone pairs, the affect the geometry of atoms attached to the central atom. For example, if there is a lone pair on the central atom with two atoms bonded to it, the shape will be bent because the electrons on the lone pair have repulsion.

[Sarah Lesmeister 2F]

The structure is bent when it has a lone pair and is bonded to two other atoms. This causes the molecule to be bent because the lone pairs have a stronger repulsion which creates the angular shape.

[Maggie Clark]

In bent molecules, all the ligands point down and the lone pairs rest on top. Bent are: AX2E or AX2E2

[Darlene Luu 1H]

A molecule is classified as bent because it has two atoms and at least one lone pair attached to the central atom.

[Aaron Kim 1J]

A bent or angular molecular geometry consists of a central atom bonded to two atoms along with a lone pair. The lone pair causes the molecule to be bent since its greater repulsion strength "pushes" the bonded atoms away, creating the bent/angular shape.

[oliviahelou]

Hey! It's bent because the lone pair electrons push the atoms down.

[Alyssa H]

Molecules are considered bent or angular when there are two bonded atoms and one or two lone pairs on the central atom. This causes region(s) of electron density to form besides those created by the bonded atoms, which then pushes those bonded atoms further "down" and essentially "bends" the molecule.

[Madeline_Miller]

I think the best way to identify a bent structure is to draw the lewis structure and determine 1) how many regions of electron density it has and 2) how many lone pairs it has. If it has 3 regions of electron density and 1 lone pair or 4 regions of electron density and 2 lone pairs, then it's bent or angular.

[Matthew Nguyen 3G]

One sign that a molecule might be bent is that it has a lone pair and is bonded to two other atoms. The lone pair creates the repulsion pushing down the two atoms, creating the bent shape.

[Jaipal Virdi 2I]

A shape will be bent due to the unequal forces within the molecule. A bent shape includes three areas of electronegativity, one of them being from a lone pair. Since lone pairs occupy more volume than a boding pair, it has a greater force. What this does is "push down the two other areas" and as a result looks bent. I hope this helps :)

[Daniel Tabibian 3K]

A structure is bent when it has two bonds and has one or more pairs of electrons on the central atom.

[akemiwebster2G]

You would know the molecule is bent if it has any lone pairs. In that case, it would make a V-shape.

[Shannon Clark 1F]

A structure is called bent when it has a central atom and two atoms bonded to it, but the central atom has a lone pair. This generally happens because the central atom's octet isn't full and has electrons left over. Because lone pairs have stronger repulsion energy than the atoms bonded to the central atom, the lone pair is going to push the two equatorial bonds downward into a bent shape.

A good example of this is an H2O molecule!
Oxygen bonds with two hydrogens, but has two lone pairs of electrons left over. These lone pairs push the hydrogen molecules downward out of the linear shape and into a bent upside down "v" shape.

[Neha Mukund]

One indication that a molecule has the shape "bent" is that the central atom has two bonds to it and one lone pair. This lone pair pushes down the other bonds and causes shape to be bent.