How to determine if a bond is polar without an electronegativity table?

We won't have an electronegativity table on the exam and we need to see if the bond is polar or not. How do you determine that without the table? My teacher was syaing something how if it is in a different column it is polar. Thank you please help!How to determine if a bond is polar without an electronegativity table?
The elements at the far left are metals of low electronegativity. The elements at the far right are mostly nonmetals of high electronegativity. The elements in the middle from group IIIB (Sc) to IIBI (Zn) are transition metals of low electronegativity. In general, metals with nonmetals will form ionic bonds. Nonmetals with nonmetals will form polar covalent bonds. The only nonpolar covalent bonds will be molecules of the same element, like F2. Metals do not form bonds with one another in the usual sense.How to determine if a bond is polar without an electronegativity table?
You can memorize trends based on the table.

Here are some tips:

The Trend goes like this

Non Polar%26gt;%26gt;Polar%26gt;%26gt;Ionic

Ionic bonds are an extreme polar bond.

Chances are that if two elements that are being bonded are close together on the periodic table, they will not be polar.