Taking reference from the given image, differentiate between Polar and Non-polar Covalent compounds. *
Answers
Explanation:
Electronegativity determines how much an atom wants electrons. The more electronegative an atom, the more it wants electrons. This is important to keep in mind when looking at the different kinds of bonds.
If one atom is much more electronegative than another, then it can either completely take an electron from the other atom (ionic bond), or it can simply pull the electrons toward itself more (polar covalent bond). As a result, covalent bonds that contain atoms with very high electronegativities (like oxygen or fluorine) are polar. The oxygen or fluorine hog the electrons.
This is the basis for the difference between polar and nonpolar bonds. The unequal sharing of electrons results in the bond having a partially positive end and a partially negative end. The more electronegative atom is partially negative (denoted δ-) while the other end is partially positive (denoted δ+).
Classifying Chemical Bonds
Bonds can either be completely nonpolar or completely polar. A completely polar bond occurs when one of the atoms is so electronegative that it takes an electron from the other atom (this is called an ionic bond).
On the other hand, when the electronegativities are exactly the same the bond is considered to be a nonpolar covalent bond. The two atoms completely share electrons.
But what happens in between these two extremes?
Here is a table that demonstrates what kind of bond is likely forming based on the difference in electronegativity: