GEOLOGY

Detailed explanation-1: -Why are certain materials, such as copper and aluminum, not magnetic? The individual atoms that make up the materials do not have magnetic fields. The individual atoms that make up the materials align themselves into domains. The magnetic fields of the individual atoms that make up the materials cancel each other out.

Detailed explanation-2: -Copper and alloys primarily based upon copper are considered non-magnetic. This is because of its atomic structure. In nature, magnetism in metals is a result of an uneven distribution of electrons within the atomic structure of the magnetic material-electrons flow from one ‘shell to the next and free to spin.

Detailed explanation-3: -If the crystalline structure of the atoms within a piece of metal is aligned so that all of the atoms are facing the same direction, that metal will be magnetic. In most materials, the atoms are not aligned into any sort of pattern. Only ferromagnetic materials are capable of being magnetized.

Detailed explanation-4: -In most materials, the north and south poles of atoms point in all different directions, so overall the material is not magnetic. Only certain materials, called ferromagnetic materials, can be magnetized.

Detailed explanation-5: -In most substances, equal numbers of electrons spin in opposite directions, which cancels out their magnetism. That is why materials such as cloth or paper are said to be weakly magnetic. In substances such as iron, cobalt, and nickel, most of the electrons spin in the same direction.