covalent bonds

[elz787]

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can a covalent bond be between two identical atoms or no?

 

[Flipper405]

can a covalent bond be between two identical atoms or no?

99.9% sure, yes. Example: O2

 

[mochafreak]

I think it actually HAS to be a covalent bond, because there is no electronegativity difference.

 

[fannian]

I think it actually HAS to be a covalent bond, because there is no electronegativity difference.

quite right, two atoms of same electronegs.

i think difference of greater than two, then ionic, about 1-2, then covalent (which includes polar covalent as approaching diff. of 2, and stricktly covalent for 0 difference.

for example, HCl is polar covalent

and NaCl is completely ionic

O2, Cl2 and all alther diatomic molecules: covalent

am i right? i'm not too sure about the above, so please correct me if i'm wrong.

 

[elz787]

thanks guys, you're all right, the answer of the problem and the explanation of the problem of the test i took contradicted themselves