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OpenStudy (anonymous):
What is the force that can cause two pieces of iron to attract each other?
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OpenStudy (anonymous):
The magnet force. The free electrons in them are free to move because of the conductivity of the metal.
OpenStudy (aaronq):
ferromagnetism
OpenStudy (aaronq):
this is caused by the existence of unpaired electrons i.e. occupy an orbital singly
OpenStudy (aaronq):
ps. conductivity and magnetism are not the same thing
OpenStudy (aaronq):
i forgot to mention that the unpaired electrons need to have parallel spins, if they have antiparallel spins they were not magnetic, a term called antiferromagnetism.
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