One can determine the polarity of AlBr3 by first drawing a simple Lewis structure. We know that Aluminum has three (3) valence electrons and Bromine has seven (7) valence electrons. To figure out the total number of valence electrons in the molecule before drawing the structure we do the following:
V = 3 + (7 x 3)
V = 24 electrons in AlBr3
Now we can draw a simple Lewis structure:
Br - Al - Br
l
Br
Each Bromine has one single bond with Aluminum and 3 lone pairs of electrons. If we calculate that each bond is two electrons and each Bromine has 6 electrons (3 lone pairs) then:
6 + 6 + 6 (from the Bromine atoms) + 2 + 2 + 2 (from the three bonds) = 24 electrons
So, we know that our structure is correct. Now we check the VSEPR type. The letter 'A' represents the central atom (in our case, Aluminum), the letter 'B' represents the number of bonding atoms to the central element (Bromine) and the letter 'E' represents the number of lone electron pairs on the CENTRAL atom (Aluminum). From this we can tell that our VSEPR configuration is AB3 (no 'E' value as there are no lone pairs of electrons on Aluminum).
Finally, we match our VSEPR configuration, AB3, with what VSEPR says about polarity. Because our molecule consists of a central atom surrounded by three bonding elements that are the same, our molecule is NON-POLAR.
*Note: If the molecule has a central atom surrounded by three bonding elements that are not the same, as in the case of COCl2, the molecule is polar.
The ionic compound AlN is called aluminum nitride.
The chemical formula for Aluminum nitride is AlN.
Toothpaste is typically a mixture of polar and non-polar substances. The surfactants in toothpaste are usually polar, while other ingredients such as thickeners and abrasives can be non-polar.
A polar solute is expected to be soluble in a non-polar solvent. This is because "like dissolves like" – polar molecules tend to dissolve in polar solvents, and non-polar molecules dissolve in non-polar solvents.
AlN is the chemical formula of aluminium nitride.
The ionic compound AlN is called aluminum nitride.
non-polar
It is non polar.
Polar contains polar. Non-polar contains nothing.
ClO4 is polar.
Nonpolar
It is non-polar, covalent.
Polar contains polar. Non-polar contains nothing.
It is non-polar
oil is non polar molecule
polar
Angelo Nascimbene has written: 'ALn 448, ALn 442, ALn 460' -- subject(s): Railroad motor-cars