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How to Draw Dipole Arrows

Posted: Sun Nov 10, 2019 2:58 pm
by Ellis Song 4I
I'm confused on how to know which way to draw dipole arrows and when to draw them.

Re: How to Draw Dipole Arrows

Posted: Sun Nov 10, 2019 3:04 pm
by PranaviKolla2B
Can someone explain how to indicate dipole moments as well?

Re: How to Draw Dipole Arrows

Posted: Sun Nov 10, 2019 3:07 pm
by Michelle Song 1I
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.

Re: How to Draw Dipole Arrows

Posted: Sun Nov 10, 2019 3:14 pm
by Anne Tsai 1F
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.

Re: How to Draw Dipole Arrows

Posted: Sun Nov 10, 2019 3:32 pm
by Shanzey
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.

Re: How to Draw Dipole Arrows

Posted: Sun Nov 10, 2019 3:50 pm
by Amanda Mei 1B
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.

Re: How to Draw Dipole Arrows

Posted: Sun Nov 10, 2019 4:08 pm
by Natalie C 1K
i am still confused on dipole moments... don't all ions have dipole moments because of their different electronegativities?

Re: How to Draw Dipole Arrows

Posted: Sun Nov 10, 2019 6:48 pm
by Rhea Shah 2F
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.

Re: How to Draw Dipole Arrows

Posted: Sun Nov 10, 2019 9:54 pm
by Debora Fernandez Clemente_ 4H
If the dipole moments always point toward the more electronegative atom is this why the arrow drawn from positive to negative?