[Valheru]

My teacher has told me bonds are both covalent AND ionic, I believe she may have been referring to electronegativity (a topic we have yet to cover) and the proximity of the electrons to the nucleus of one of the atoms in a bond, indicating whether the bond is more covalent or ionic.

Could anybody let me know if im right, or more likely if theres another explanation?

[opti384]

You are on the right track.

[Mole]

Hey Valheru,

I just joined and saw your post.  I'm assuming that your instructor may have been saying that the higher the difference in electronegativity between two elements the more of an attraction (polarity) there may be between them. If there is less than a .4% difference then the two are considered non-polar as in Carbon and Sulfur.   If you haven't already been here, there's an awesome periodic table at http://www.ptable.com/ and if you click on properties, it shows you everything you always wanted to know about that element including the electronegativity.