Which of the following is an example of paramagnetic material?

Explanation

Explanation: Paramagnetic materials Small, positive susceptibility to magnetic fields These materials are slightly attracted by a magnetic field Paramagnetic properties are due to the presence of some unpaired electrons, and from the realignment of the electron paths caused by the external magnetic field Paramagnetic materials include magnesium, molybdenum, lithium, and tantalum Important Points Ferromagnetic materials Have a large, positive susceptibility to an external magnetic field They exhibit a strong attraction to magnetic fields and can retain their magnetic properties after the external field has been removed Ferromagnetic materials have some unpaired electrons, so their atoms have a net magnetic moment Iron, nickel, and cobalt are examples of ferromagnetic materials Diamagnetic materials Weak, negative susceptibility to magnetic fields Diamagnetic materials are slightly repelled by a magnetic field All the electrons are paired so there is no permanent net magnetic moment per atom Most elements in the periodic table, including copper, silver, and gold, are diamagnetic