GK
ELEMENTS COMPOUNDS SUBSTANCES METALS AND NON METALS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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insulator
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magnetic
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non-magnetic
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none of these
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Detailed explanation-1: -Magnetic materials are the materials which are attracted by a magnet. Cobalt, nickel, iron and steel are attracted by magnet and hence, they are magnetic in nature.
Detailed explanation-2: -Only ferromagnetic materials such as iron, cobalt, and nickel are attracted to magnetic fields strong enough to be truly considered magnetic. However, all metals can be placed into one of three categories: Ferromagnetic. Paramagnetic.
Detailed explanation-3: -Iron and nickel are two of the most well-known ferromagnets, that is, conducting materials with a permanent magnetization1.
Detailed explanation-4: -Cobalt, iron and nickel are attracted to a magnet. Hence, they are magnetic materials.
Detailed explanation-5: -Exactly in the four elements iron, nickel, cobalt and gadolinium, there is interaction between so-called ‘unpaired spins’. This interaction ensures that the magnetic moments of atoms can permanently align parallel to each other. The sum of all these small magnetizations forms the nett magnetization of the material.