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Drawing a Dipole

Posted: Tue Nov 27, 2018 6:13 am
by 505095972
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?

Re: Drawing a Dipole

Posted: Tue Nov 27, 2018 8:13 am
by Shubham Rai 2C
I think Professor Lavelle said that in this chem the arrow should point to the negative charge.

Re: Drawing a Dipole

Posted: Tue Nov 27, 2018 9:46 am
by Kate_Santoso_4F
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.

Re: Drawing a Dipole

Posted: Tue Nov 27, 2018 1:19 pm
by Catherine Kim 3K
The arrow should point towards the negative charge.

Re: Drawing a Dipole

Posted: Tue Nov 27, 2018 4:15 pm
by Kevin Tang 4L
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)

Re: Drawing a Dipole

Posted: Tue Nov 27, 2018 5:21 pm
by Dana Wilks 3I
Yes, the arrow should point towards the partial negative charge. The textbook uses the other notation, though.

Re: Drawing a Dipole

Posted: Thu Nov 29, 2018 11:30 am
by Nikki Bych 1I
Yes, the arrow should be pointing towards the more electronegative atom.