GEOLOGY

Detailed explanation-1: -Nickel is also a popular magnetic metal with ferromagnetic properties. Its compounds are also found in the earth’s core. Nickel has historically been used to make coins. Nickel is used today in batteries, coatings, kitchen equipment, phones, buildings, transportation, and jewellery.

Detailed explanation-2: -Due to the parallel alignment of its two unpaired electrons or spins in the presence of an external magnetic field, nickel is ferromagnetic by nature. Due to its ability to retain its magnetism even in the absence of external, nickel is permanently magnetized.

Detailed explanation-3: -There are basically three types of magnets: permanent magnet, temporary magnet and electromagnet.

Detailed explanation-4: -Iron nails, nickel, steel pen, and cobalt will be attracted to magnet and rest of the materials are non-magnetic in nature, so they will not be attracted to a magnet.

Detailed explanation-5: -Nickel shows ferromagnetic property at room temperature.