Which of the following statements are true about permanent magnetic materials, like iron? magnetic materials always produce a dipole field around them O magnetic materials have unpaired valence electrons O permanent magnets have large-scale alignment of magnetic domains O magnetic materials can be temporarily magnetized by an external magnetic field O all metals are magnetic materials O all conductors are also magnetic materials O magnetic materials have completely filled valence orbitals O permanent magnets have many distinct domains that point in different directions

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