Question

What causes nickel and certain other metals to be magnetic?

A.
the motion of protons in their atoms

B.
the influence of the earth's magnetic field

C.
the pattern of electrons in their atoms

D.
their atoms have more electrons than protons

Answer 1

@shamim @Conqueror @NeonStrawsForever help ill medal

Answer 2

its the way their electrons are unpaired - creating mini magnets.....

Answer 3

You must've read that a current carrying wire creates a magnetic field. Similarly an electron revolving around the nucleus of an atom can be considered as a small current carrying conductor.It imparts a magnetic field to the atom.It's magnetic field is firstly due to it's spin(like how earth rotates around it's axis) and secondly due to it's revolution around the nucleus(like earth around the sun).Electrons are present in pairs in an atom, such that electrons with opposite spins are paired together.Because of the opposite spins, the magnetic field of both the electrons are cancelled out and on the whole the substance behave as a non magnetic material. But some elements such as Nickel, Iron etc.have unpaired electrons, because of which they have a magnetic field and are magnetic in nature.

Answer 4

C.