Coordination Chemistry Concepts

The video introduces complex ions, which are formed by transition metal cations and ligands. It explains the concept of coordination numbers and geometries, using examples like the diamine silver cation and hexa cyano ferrate ion. Alfred Werner's theory on primary and secondary valence is discussed, along with the types of ligands and their interactions. The video concludes with an explanation of coordination compounds, highlighting the roles of complex ions and counter ions.

What is a complex ion?

• A metal ion with no ligands

• A combination of a transition metal cation with a ligand molecule or ion

• A simple ion with a single charge

• A molecule with no charge

What is the coordination number of the diamine silver cation?

• Four

• Three

• Two

• One

What is the oxidation state of iron in the hexa cyano ferrate ion?

• 0

• +3

• +2

• -3

According to Werner's theory, what does the primary valence of a transition metal ion refer to?

• Its size

• Its color

• Its oxidation state

• Its coordination number

What geometry is associated with a coordination number of six?

• Linear

• Tetrahedral

• Octahedral

• Square planar

Which of the following is a unidentate ligand?

• EDTA

• Ammonia

• Ethylene diamine

• Oxalate

What is the coordination number of cobalt in Co2+?

• Two

• Four or six

• Eight

• Six

What is a coordination compound?

• A neutral compound consisting of a complex ion and a counter ion

• A simple molecule

• A single metal ion

• A charged ion

In the example K3[Fe(CN)6], what is the role of K?

• Counter ion

• Complex ion

• Transition metal

• Ligand

What is the charge of the complex ion [Cr(NH3)6] in the given example?

• +1

• +2

• +3

• 0