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Question

Choose the metal that is not attracted by magnet:


A

Cobalt

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B

Iron

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C

Nickel

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D

Silver

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Solution

The correct option is D

Silver


The explanation for the correct answer: Option(D)

  1. Silver is the world's second most expensive metal after gold, and its magnetic properties and behavior are quite similar to gold.
  2. Since all elements in the periodic table must be one of paramagnet, ferromagnet, superconductor, or diamagnet.
  3. In the presence of an applied external magnetic field, silver is weakly magnetic.
  4. While silver is diamagnetic, it repels a magnet weakly in the presence of an applied external magnetic field.
  5. Because there is only one lone electron available within the atom, it is a weak paramagnet but a powerful diamagnet.

The explanation for the incorrect answer: Option(A)

  1. Magnetic interaction can be detected in either ferromagnetic or paramagnetic substances.
  2. Ferromagnetic materials are composed of numerous domains, which are regions with parallel spins of electrons.
  3. Cobalt is a silver-white hard ferromagnetic element. When a magnetic field is applied, they all organize themselves to create a crystal lattice.
  4. When an atom is placed in a magnetic field, it behaves like a magnet, which is referred to as a magnetic moment.
  5. This is because the atom's electrons interact with the magnetic field.

The explanation for the incorrect answer: Option(B)

  1. Ferromagnetic materials contain magnetic domains that all point in the same direction.
  2. Iron and cobalt are two examples.
  3. Iron molecules arrange themselves in the direction of the magnetic field.
  4. These individual iron molecules behave like tiny magnets, and when lined up in the same way, the rod becomes magnetic.

The explanation for the incorrect answer: Option(C)

  1. Nickel (Ni) is one of just a few ferromagnetic metals.
  2. Ferromagnetic indicates that they are attracted to magnets and can be magnetized.
  3. Nickel (Ni) is a ferromagnetic metal that is used to make Alnico magnets.

Therefore, option D is the correct choice.


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