Question

bronze analysis
magnetic properties

consider the potential magnetic properties of the individual element, copper, in the alloy bronze.

use the noble gas electron configurations given below to make your determination. be on the lookout for any filling order exceptions.

cu: $ar 4s^1 3d^{10}$

note: we are determining the magnetic properties of copper in its elemental form, not its ionic form.

which choice describes the potential magnetic properties of the individual element, copper, in the alloy?

copper is diamagnetic because it has all paired electrons.
copper is diamagnetic because it has unpaired electrons.
copper is paramagnetic because it has all paired electrons.
copper is paramagnetic because it has unpaired electrons.

Explanation:

Paramagnetism arises from unpaired electrons, while diamagnetism comes from all electrons being paired. Copper's electron configuration is $[Ar] 4s^1 3d^{10}$, which has one unpaired 4s electron.

Answer:

Copper is paramagnetic because it has unpaired electrons.