The atoms of a paramagnetic substance contain even number of electrons . The atoms or molecules of a paramagnetic substance do not possess any net magnetic moment . The atoms of a paramagnetic material contain odd number of electrons .
Every atom or molecule of a paramagnetic substance has its own magnet moment , i . e ., its each atom or molecule is a tiny magnet .
In a ferromagnetic substance , there are several tiny regions called domains . Each domain contain approximately 1010 atoms .