generate questions: In the triplet form, O
2 molecules are paramagnetic. That is, they impart magnetic character to oxygen when it is in the presence of a magnetic field, because of the spin magnetic moments of the unpaired electrons in the molecule, and the negative exchange energy between neighboring O
2 molecules. Liquid oxygen is attracted to a magnet to a sufficient extent that, in laboratory demonstrations, a bridge of liquid oxygen may be supported against its own weight between the poles of a powerful magnet.[c]
What magnetic character do triplet O2 have? {sep_token} In experiments, a bridge of what element can be built between poles of a magnet? {sep_token} The spin of what can produce a magnetic effect to oxygen molecules? {sep_token} What kind of field is necessary to produce a magnet effect in oxygen molecules? {sep_token} What device is used to test the magnetic attractions involved in liquid oxygen?