Linear Shape

(Polar molecules, Non-polar molecules, etc.)

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Riya Sood 4G
Posts: 160
Joined: Sat Aug 24, 2019 12:18 am

Linear Shape

Postby Riya Sood 4G » Tue Nov 19, 2019 11:39 am

Are linear shapes always nonpolar ? are there any exceptions?

jisulee1C
Posts: 149
Joined: Thu Jul 25, 2019 12:17 am

Re: Linear Shape

Postby jisulee1C » Tue Nov 19, 2019 11:40 am

Even though shape of linear is non polar if there are different atoms on each side of the central atom then even if the shape is non polar there will be unequal dipoles and therefore the molecule can be polar an example might be HCN.

Adelpha Chan 1B
Posts: 58
Joined: Thu Jul 25, 2019 12:15 am

Re: Linear Shape

Postby Adelpha Chan 1B » Tue Nov 19, 2019 12:08 pm

Riya Sood 4C wrote:Are linear shapes always nonpolar ? are there any exceptions?

linear shapes are only nonpolar if both atoms bonded to the central atom exhibit the same amount of potential energy.
In the example of HCN, N exhibits a partial negative charge while H exhibits a partial positive charge as N has more electrons and therefore has a stronger pull. As a result, this is a polar molecule with a linear shape

Heba Mengesha 3D
Posts: 50
Joined: Sat Sep 07, 2019 12:19 am

Re: Linear Shape

Postby Heba Mengesha 3D » Tue Nov 19, 2019 1:13 pm

A linear shape may or may not be polar depending on if the molecule is symmetrical or not.

EvanWang
Posts: 101
Joined: Sat Sep 07, 2019 12:16 am

Re: Linear Shape

Postby EvanWang » Tue Nov 19, 2019 1:21 pm

Only if the bonded atoms on either side of the central atom are the same will the molecule be nonpolar. If the bonded atoms are different, there will be a net dipole moment.

Robert Tran 1B
Posts: 118
Joined: Thu Jul 11, 2019 12:15 am

Re: Linear Shape

Postby Robert Tran 1B » Tue Nov 19, 2019 2:47 pm

A linear bond can be polar if the dipole moments are unequal, and therefore, do not cancel out.

Deana Moghaddas 3E
Posts: 51
Joined: Fri Aug 30, 2019 12:17 am

Re: Linear Shape

Postby Deana Moghaddas 3E » Tue Nov 19, 2019 3:32 pm

the molecule will maintain its linear shape even when its polar because the dipole moments may not be that large/attractive enough to change the shape in any way


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