Question

!MEDAL & FAN TO HELP!

Answer 1

There are 3 types of magnetism:
1) diamagnetism
2) paramagnetism
3) ferromagnetism

Diamagnet metals have a slight tendency to be REPELed by magnetics
Paramagnetic metals have a slight tendency be ATTRACTed to magnets
Ferromagnet metals have a STRONG tendency to be ATTRACTed to magnets

Magnetic fields in metals arise because of the spin of the electron induces a magnetic field around it, similar to how a magnetic field is induced by a current.

So since all metals have electrons, all metals have some sort of magnetic field. The reason ferromagnetic materials are so attracted to magnets is because there are "domains" of electrons all spinning in the same direction, which add up to a large magnetic field.

On the other hand, paramagnetic materials do not have this feature and the sum of all electron magnetic fields is nearly zero, but can be aligned to some degree with an external magnetic field.

For paramagnetic, the reasons can only be understood using Quantum Mechanics.

Consequently, not all metals are ferromagnetic, all metals have some type of induced magnetic fields (via electron spin), and not all metals are attracted to magnets.

None of the options in your problem satisfy these properties.The last one is the closest, but like I said, there are some metals that are weakly attracted that are called paramagnetic.

Answer 2

what he said