Quiz on Bonding in d-block Metal Complexes

Who first proposed the idea that atoms form covalent bonds by sharing pairs of electrons?

• G. N. Lewis

• Erwin Schrödinger

• Niels Bohr

• Linus Pauling

Which theory suggests that atomic orbitals mix to form hybrid orbitals in coordination complexes?

• VSEPR Theory

• Molecular Orbital Theory

• Crystal Field Theory

• Valence Bond Theory

In an octahedral complex, which atomic orbitals are required for hybridization?

• 4px, 4py, 4pz

• 3dz2, 3dx2-y2, 4s

• 3dxy, 3dxz, 3dyz, 4s, 4px, 4py, 4pz

• 3dxy, 3dxz, 3dyz

Which type of ligands tend to decrease the ligand field splitting in metal complexes?

• Strong-field ligands

• Weak-field ligands

• π-donor ligands

• π-acceptor ligands

What is the term symbol for the ground state of a Ti3+ cation complex with a d1 configuration in Oh symmetry?

• 7T1g + T2g + A2g

• 1A1g

• 3T1g

• 5T2g + Eg

Which rule states that the term with the greatest spin multiplicity lies lowest in energy?

• Pauli Exclusion Principle

• Hund's Rule

• Bohr's Rule

• Aufbau Principle

What is the term symbol for the ground state of the free Mg atom?

• 7F

• 5D

• 3P

• 1S

Which ligands are considered as strong-field ligands in the spectrochemical series?

• Br-

• F-

• I-

• Cl-

What does the 18-electron rule state in transition-metal complexes?

• There must be exactly 18 valence electrons in the complex

• Transition metals can only form complexes with 18 ligands

• 18 valence electrons are optimal for stability

• Complexes with 18 valence electrons are always colored

Which theory incorporates aspects of Crystal Field Theory with Molecular Orbital Theory?

• Valence Bond Theory

• Ligand Field Theory

• VSEPR Theory

• Hybridization Theory