Crystal field theory

According to Crystal field theory the bond between metal and ligand is purely ------------.

• Electrostatic

• Covalent

• No such type of interactions

The magnitude of Crystal Field splitting of d orbitals depends on

• Orientation of the d orbitals around the central metal ion .

• Number of interacting ligand

• Nature of the ligand

• Nature of the metal

• All of the above

The extent of splitting in Octahedral complexes is denoted by ---------------

• Δt

• Δ0

• Δsp

The ligands with high CFSE than pairing energy called

• Strong field ligands

• Weak field ligands

• Neutral ligands

When the ligands move along the x, y and z axes of d orbital in metal ion (octahedral geometry), they approach directly toward or between the lobes. Name the d orbitals that feel less repulsion?

• dz²

• dxy and dxz

• dxy_, dxz and dyz

• dz² and dx²- y²

When the ligands move along the x, y and z axes of d orbital in metal ion (tetrahedral geometry), none of the five d orbitals is directly in their path. Name the d orbitals that feel strong repulsion?

• dz² and dx²- y²

• dxy_, dxz and dyz

• dxy and dxz

• dz²

Which of following has highest CFSE

• [Cr(H₂O)_6]³⁺

• [Mn(H₂O)₆]²⁺

• [FeCl₄]^2-

• [TiF₆]^3-

The energy diagram of the d orbital energy splitting complexes in octahedral geometry, shows the d orbitals with higher in energy (e_g) which refer to _____________ d orbitals

• dxy_, dxz and dyz

• dxy and dxz

• dz² and dx²- y²

• dz²

Crystal field strength of the ligand is inverse proportional to splitting energy

• true

• false

From the following, complex with highest splitting energy is ___________ .

• K₄[Fe(CN)₆]

• K₄[FeCl₆]

• K₄[Fe(SCN)₆]

• K₄[Fe(NCS)₆]