Drawing Arrows?

[Linette Choi 3L]

Can someone help explain how to draw arrows when determining dipole moments and how we can assume polarity of the molecule with this method?

[Chem_Mod]

The arrow refers to the direction of the dipole moment. The tip of the arrow will point towards the atom with the partial negative charge while the head of the arrow points to the atom with the partial positive charge. If these arrows, or the dipole moments "cancel out", the molecule is nonpolar.

[VSU_3F]

The arrow is always pointing towards the atom with the stronger electronegativity because that is the atom the electrons are slightly more attracted to. To determine if a bond is polar or not, you would have to look at the electronegativity difference (0-0.4 is nonpolar and 0.5 or more is polar, I believe). To determine if a molecule is polar or not, you would have to look at the molecular shape and see whether or not the dipoles cancel. If they do, you have a nonpolar molecule; if they don't it's polar.

[Simi Kapila_3E]

The atoms in the molecule with the highest electronegativity will pull the electrons more, creating a negative dipole at that atom. And since that atom is pulling electrons, other parts of the molecule will have a positive dipole since electrons are being pulled away from them. To draw the arrow, the arrow head will be pointed towards the negative dipole in the molecule, while their ends come from the positive dipoles. It essentially shows the way in which the electrons are being pulled.

[Kandyce Lance 3E]

The atoms in the molecule with the highest electronegativity will pull the electrons more, creating a negative dipole at that atom. And since that atom is pulling electrons, other parts of the molecule will have a positive dipole since electrons are being pulled away from them. To draw the arrow, the arrow head will be pointed towards the negative dipole in the molecule, while their ends come from the positive dipoles. It essentially shows the way in which the electrons are being pulled.

Do you have a diagram or anything to go with you explanation by chance?

[Erika Sosa-Cruz 1J]

The arrows point to the atoms that have the highest electronegativity. From there we can determine if the are non polar or polar based on the direction that the arrows are in.