What are paramagnetic substances? Give examples.

1.	What are paramagnetic substances? Give examples.
Answer» (1) The magnetic properties of a substance arise due to the presence of electrons. (2) An electron while revolving around the nucleus, also spins around its own axis and generates a magnetic moment and magnetic properties. (3) If an atom or a molecule contains one or more unpaired electrons spinning in same direction, clockwise or anticlockwise, then the substance is associated with net magnetic moment and magnetic properties. They experience a net force of attraction when placed in the magnetic field. This phenomenon is called paramagnetism and the substance is said to be paramagnetic. For example, O₂, Cu²⁺, Fe³⁺, Cr³⁺, NO, etc.

Answer»

(1) The magnetic properties of a substance arise due to the presence of electrons.

(2) An electron while revolving around the nucleus, also spins around its own axis and generates a magnetic moment and magnetic properties.

(3) If an atom or a molecule contains one or more unpaired electrons spinning in same direction, clockwise or anticlockwise, then the substance is associated with net magnetic moment and magnetic properties. They experience a net force of attraction when placed in the magnetic field.

This phenomenon is called paramagnetism and the substance is said to be paramagnetic.

For example, O₂, Cu²⁺, Fe³⁺, Cr³⁺, NO, etc.

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