Question : In terms of their magnetic properties, the elements named nickel and cobalt are classified as:
Option 1: paramagnetic
Option 2: anti-ferromagnetic
Option 3: ferromagnetic
Option 4: diamagnetic
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Correct Answer: ferromagnetic
Solution : The correct option is ferromagnetic .
Nickel (Ni) and cobalt (Co) are both transition metals and are classified as ferromagnetic elements. Ferromagnetic materials are characterised by the presence of magnetic moments (spins of electrons) that tend to align in the same direction, leading to strong magnetic behaviour. Both nickel and cobalt exhibit this property, and they are commonly used in the production of magnets and various magnetic materials.
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