Question

Which ions are unlikely to form colored coordination complexes in an octahedral ligand environment? y3 fe3 cr5 ag

Answer 1

It is improbable that any specie with d0 or d10 will exhibit color in coordination compounds.

• If the central metal atom or ion in a coordination complex contains unfilled d orbitals, the compound exhibits color.
• Weak d–d transitions that produce spectral bands in the visible spectrum are thought to be the source of the colors.
• Hence, It is improbable that any specie with d0 or d10 will exhibit color in coordination compounds.

What are coordination compounds?

• Molecules that have one or more metal centers bonded to ligands are known as coordination compounds (atoms, ions, or molecules that donate electrons to the metal).
• These complexes may have a charge or be neutral.
• The complex is stabilized by nearby counter-ions when it is charged.

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