The video tutorial explores coordination compounds, starting with Verner's Theory and its limitations. It delves into valence bond theory, explaining hybridization and examples of cobalt complexes. The tutorial discusses magnetic properties, highlighting the role of unpaired electrons. It outlines the limitations of valence bond theory and introduces crystal field theory, explaining ligand interactions, crystal field splitting, and the spectrochemical series. The video also covers the color of coordination compounds and the limitations of crystal field theory.

Which theory was unable to explain why only some elements form coordination compounds?

• Crystal Field Theory

• Valence Bond Theory

• Verner's Theory

• Molecular Orbital Theory

In Valence Bond Theory, what is required for a metal atom to form a bond with a ligand?

• High electronegativity

• Presence of unpaired electrons

• Sufficient number of vacant orbitals

• Sufficient number of filled orbitals

What type of hybridization results in a square planar geometry?

• d2sp3

• dsp2

• sp3

• sp2

What is the electronic configuration of a Co3+ ion?

• [Ar] 3d8

• [Ar] 3d6

• [Ar] 3d7

• [Ar] 3d5

What causes the magnetic properties of a molecule or atom?

• High atomic number

• Presence of unpaired electrons

• Presence of paired electrons

• Low atomic mass

Which of the following is a limitation of Valence Bond Theory?

• It provides a quantitative interpretation of magnetic data

• It explains the color of coordination compounds

• It predicts the exact geometry of complexes

• It involves a number of assumptions

In Crystal Field Theory, what causes the splitting of d-orbitals?

• High temperature

• Low pressure

• Presence of unpaired electrons

• Interaction with ligands

What is the spectrochemical series used for?

• Predicting molecular geometry

• Calculating bond angles

• Arranging ligands by increasing field strength

• Determining the color of compounds

What happens to the color of a coordination compound when a ligand is removed?

• It changes to a complementary color

• It becomes more vibrant

• It remains the same

• It becomes colorless

Which theory explains the covalent character of the bond between the central metal atom and the ligand?

• Crystal Field Theory

• Valence Bond Theory

• Molecular Orbital Theory

• Ligand Field Theory