Problem: Is the following ion diamagnetic or paramagnetic? Cr3+

FREE Expert Solution

We are being asked if the species is paramagnetic or diamagnetic so we have to determine the electron configuration of Cr3+ ion

Recall that paramagnetic species have 1 or more unpaired electrons while diamagnetic contains 0 unpaired electrons.

To figure that out, let’s first write the electron configuration of a neutral (uncharged) Cr atom.

Ground-state means that Chromium is in its lowest energy form (not in an excited state). 

Neutral element:       Atomic number = # protons = # of electrons

Neutral Chromium (Cr):

Atomic number = 24
• # of electrons = 24 e-

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Problem Details

Is the following ion diamagnetic or paramagnetic? 


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