The bond between two oxygen atoms (a molecule of oxygen air) has two characteristics. What are they?
I would say it had more than two characteristics!
I guess the two most obvious things you could say about the bond between two oxygen atoms is:
1) It's a covalent double bond.
2) It has zero polarity, as both atoms are the same.
But you could also list things such as bond energy and bond length, type of molecular orbitals involved and so on.
Not sure about the term "oxygen air" either. "Oxygen gas", maybe?