Hi

,
I was wondering if anyone knew the differences between covalent bonds, ionic bonds, and polar covalent bonds. I kind of got the idea that a compound is ionic if the sharing is (10-90) above or equal to 1.5, but I'm not sure if that's the only thing that determines the bond.
Here's one of my homework problems:
Which of the following have ionic bonds?
a. Hg
b. NaF
c. SO
d. LiBr
Atm, I'm thinking the answers are B & D, but I'm still not to sure, all help is appreciated!
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