Question:

Point out the correct set of diamagnetic substances

Updated On: Jul 6, 2022
  • aluminium, sodium calcium and oxygen
  • bismuth, copper, lead and silicon
  • cobalt, nickel, gadolinium and aluminium
  • silver, niobium, magnesium and calcium
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The Correct Option is B

Solution and Explanation

Bismuth, copper, lead and silicon all are having diamagnetic property as atoms of these material have resultant magnetic moment zero.
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Concepts Used:

Types of Magnets

A magnet is a material or artificial setup that can produce a magnetic field around it.

Magnets are of generally three types which are as follows:

  • Temporary magnets: Temporary magnets can be magnetized in the presence of a magnetic field. When the magnetic field is removed, these materials lose their magnetic property. Iron nails and paper-clips are examples of the temporary magnet.
  • Permanent magnets: Permanent magnets are those magnets that are commonly used. They are known as permanent magnets because they do not lose their magnetic property once they are magnetized. Types of permanent magnets:
    • Ceramic or ferrite
    • Alnico
    • Samarium Cobalt (SmCo)
    • Neodymium Iron Boron (NIB)
  • Electromagnets: Electromagnets consist of a coil of wire wrapped around the metal core made from iron. When this material is exposed to an electric current, the magnetic field is generated making the material behave like a magnet. The strength of the magnetic field can be controlled by controlling the electric current.