Drawing a Dipole

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505095972
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Joined: Fri Sep 28, 2018 12:17 am

Drawing a Dipole

Postby 505095972 » Tue Nov 27, 2018 6:13 am

When we draw a dipole, do we use the modern convention or the other one? In other words, should the arrow point towards the negative charge or the positive one?

Shubham Rai 2C
Posts: 64
Joined: Fri Sep 28, 2018 12:27 am

Re: Drawing a Dipole

Postby Shubham Rai 2C » Tue Nov 27, 2018 8:13 am

I think Professor Lavelle said that in this chem the arrow should point to the negative charge.

Kate_Santoso_4F
Posts: 72
Joined: Fri Sep 28, 2018 12:29 am

Re: Drawing a Dipole

Postby Kate_Santoso_4F » Tue Nov 27, 2018 9:46 am

Yes when drawinga dipole moment, arrows are used to show the polarity points from the positive areas to the negative areas. For example, in water, there is a higher electron density around the oxygen atom, giving it an overall negative charge and the hydrogen atoms overall positive charges. The arrows should point toward the oxygens.

Catherine Kim 3K
Posts: 31
Joined: Fri Sep 28, 2018 12:26 am

Re: Drawing a Dipole

Postby Catherine Kim 3K » Tue Nov 27, 2018 1:19 pm

The arrow should point towards the negative charge.

Kevin Tang 4L
Posts: 83
Joined: Fri Sep 28, 2018 12:28 am

Re: Drawing a Dipole

Postby Kevin Tang 4L » Tue Nov 27, 2018 4:15 pm

One way to remember is that there is a plus like shape on the partially positive side of the dipole:

(plus like shape on this side) +--------------> (points towards the partially negative side)

Dana Wilks 3I
Posts: 30
Joined: Fri Sep 28, 2018 12:23 am

Re: Drawing a Dipole

Postby Dana Wilks 3I » Tue Nov 27, 2018 5:21 pm

Yes, the arrow should point towards the partial negative charge. The textbook uses the other notation, though.

Nikki Bych 1I
Posts: 60
Joined: Fri Sep 28, 2018 12:16 am

Re: Drawing a Dipole

Postby Nikki Bych 1I » Thu Nov 29, 2018 11:30 am

Yes, the arrow should be pointing towards the more electronegative atom.


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