The Co(NH3)6^3+ ion is diamagnetic, but Fe(H2 O)6^2+ is para-magnetic. Explain.

Name: Problem 54, Chapter 20: Chemistry An Atoms First Approach
Uploaded: 2020-06-26T09:29:19-08:00
Duration: 2 min 47 s
Channel: Arpit Gupta
Description: The Co(NH3)6^3+ ion is diamagnetic, but Fe(H2 O)6^2+ is para-magnetic. Explain.

step 1 We have two cations of two different salts as covald and H3 as with deficiency of three electron

The Co(NH3)6^3+ ion is diamagnetic, but Fe(H2 O)6^2+ is...

Key Concepts

Magnetic Properties

The magnetic behavior of a complex is determined by the presence or absence of unpaired electrons. Complexes with all electrons paired are diamagnetic, exhibiting no net magnetic moment, while those with unpaired electrons are paramagnetic, showing a magnetic response when subjected to an external magnetic field.

High Spin and Low Spin Configurations

Depending on the magnitude of the crystal field splitting relative to electron pairing energy, transition metal complexes can adopt either high spin or low spin configurations. High spin complexes have more unpaired electrons due to electrons occupying separate orbitals, whereas low spin complexes have fewer or no unpaired electrons because electrons pair up in the lower energy orbitals.

Ligand Field Strength

Ligands vary in their ability to split the d orbital energies, a property described by the spectrochemical series. Strong-field ligands produce a larger splitting (high ?) which can lead to electron pairing in the lower energy orbitals, while weak-field ligands produce a smaller splitting, allowing electrons to occupy higher energy orbitals with parallel spins.

Crystal Field Theory

Crystal Field Theory explains that the degenerate d orbitals of a transition metal ion split into sets of different energies due to the electrostatic interactions with surrounding ligands. This splitting depends on the geometry of the complex and the nature of the ligands, and it directly affects how electrons are arranged within these orbitals.

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