Bond where electrons are being transferred?

[ProblemSets]

1. which letter shows a bond where electrons are being transferred?
2. which letter shoes a bond where electrons are equally shared?
3. which letter shows a bond that would cause each atom to become partially charged
4. which atom can be considered an anion?
5. which bond above would cause the compound to have the highest melting point?

answers: Y,X,Z,4,Y


are they correct??
thanks!

P.S. EN stands for electronegativity

 

[ProblemSets]

anion i believe is negative charged atom correct, so then i am correct by saying that it is atom 4 in question #4

 

[dmoravec]

remember, anions occur when electrons are transfered...

 

[ProblemSets]

so it would be 3 then?

 

[dmoravec]

well it depends what '3' is attached to. fluorocarbons are not ionicly bonded, but fluorine is commonly an anion. So both 3 and 4 could be anions, but it would depend what they are bonded with.