How to Draw Dipole Arrows

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Ellis Song 4I
Posts: 102
Joined: Thu Jul 11, 2019 12:17 am

How to Draw Dipole Arrows

Postby Ellis Song 4I » Sun Nov 10, 2019 2:58 pm

I'm confused on how to know which way to draw dipole arrows and when to draw them.

PranaviKolla2B
Posts: 114
Joined: Fri Aug 30, 2019 12:17 am

Re: How to Draw Dipole Arrows

Postby PranaviKolla2B » Sun Nov 10, 2019 3:04 pm

Can someone explain how to indicate dipole moments as well?

Michelle Song 1I
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Joined: Thu Jul 11, 2019 12:17 am

Re: How to Draw Dipole Arrows

Postby Michelle Song 1I » Sun Nov 10, 2019 3:07 pm

I'm pretty sure δ is used to indicate the charge on the atoms and the dipole arrows are drawn going from the positive to negatively charged atoms.

Anne Tsai 1F
Posts: 50
Joined: Thu Jul 25, 2019 12:15 am

Re: How to Draw Dipole Arrows

Postby Anne Tsai 1F » Sun Nov 10, 2019 3:14 pm

Dipole arrows are drawn when there is a difference in electronegativity between atoms in a molecule, and the arrow is pointing towards the more electronegative atom.

Shanzey
Posts: 120
Joined: Wed Sep 18, 2019 12:20 am

Re: How to Draw Dipole Arrows

Postby Shanzey » Sun Nov 10, 2019 3:32 pm

Dipole arrows are drawn on Lewis structures and point towards the more electronegative atom, since they pull electrons towards them. This is why in water the dipole arrows are drawn going from hydrogen (low electronegativity) towards oxygen (higher electronegativity). Due to this pulling of electrons, oxygen has a partial negative charge, and the two hydrogens have partial positive charges.

Amanda Mei 1B
Posts: 109
Joined: Sat Aug 24, 2019 12:16 am

Re: How to Draw Dipole Arrows

Postby Amanda Mei 1B » Sun Nov 10, 2019 3:50 pm

After drawing a Lewis structure, you'd draw a dipole arrow pointing towards the atom with higher electronegativity. This is because this atom attract electrons and gains a partial positive charge. The other atom involved in the bond, the one with the lower electronegativity, would have a partial positive charge, with the plus part of the arrow on it.

Natalie C 1K
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Re: How to Draw Dipole Arrows

Postby Natalie C 1K » Sun Nov 10, 2019 4:08 pm

i am still confused on dipole moments... don't all ions have dipole moments because of their different electronegativities?

Rhea Shah 2F
Posts: 97
Joined: Thu Jul 25, 2019 12:17 am

Re: How to Draw Dipole Arrows

Postby Rhea Shah 2F » Sun Nov 10, 2019 6:48 pm

Dipole moments occur in any bond in which the atoms have a difference in electronegativity. The greater the difference in electronegativity, the greater the dipole moment. The arrow in the dipole moment always points to the more electronegative atom because this is the direction in which the electrons are being pulled.

Debora Fernandez Clemente_ 4H
Posts: 52
Joined: Wed Sep 18, 2019 12:21 am

Re: How to Draw Dipole Arrows

Postby Debora Fernandez Clemente_ 4H » Sun Nov 10, 2019 9:54 pm

If the dipole moments always point toward the more electronegative atom is this why the arrow drawn from positive to negative?


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