When Is Something Paramagnetic or Diamagnetic?

The magnetic properties of a substance can be determined by examining its electron configuration: If it has unpaired electrons, then the substance is paramagnetic and if all electrons are paired, the substance is then diamagnetic.

What is paramagnetic and diamagnetic example?

Diamagnetic substances when placed in a magnetic field are feebly magnetised opposite to the direction of the magnetising field, to example copper. Paramagnetic substances when placed in a magnetic field are feebly magnetised in a direction of the magnetising field, example aluminium.

What is diamagnetic or paramagnetic?

A compound is diamagnetic if all its electrons are paired and paramagnetic if any of its electrons are unpaired. The electron configuration of Cu²⁺ is [Ar]3d⁹. Since it has an odd number of electrons, one of them must be unpaired, so Cu²⁺ is paramagnetic.