The permanent magnetic moment of the atoms of a material is not zero. The material
(a) must be paramagnetic
(b) must be diamagnetic
(c) must be ferromagnetic
(d) may be paramagnetic

Question

The permanent magnetic moment of the atoms of a material is not zero- The material -must be ferromagnetic must be paramagneticmay be paramagneticmust be diamagnetic

Toppr Admin · Accepted Answer

Unlike paramagnetic materials- the atomic moments in ferromagnetic materials exhibit very strong interactions- These interactions are produced by electronic exchange forces and result in a parallel or antiparallel alignment of atomic moments-This results in permanent non-zero magnetic moment of atoms in these materials-

The permanent magnetic moment of the atoms of a material is not zero. The material :must be ferromagnetic must be paramagneticmay be paramagneticmust be diamagnetic

The permanent magnetic moment of the atoms of a material is not zero. The material :
must be ferromagnetic
must be paramagnetic
may be paramagnetic
must be diamagnetic