Quiz for Bonding theories

Q1: Which theory explains the magnetic properties of coordination compounds?

A. A) VSEPR theory B. B) Crystal Field Theory C. C) Hybridization Theory D. D) Lewis Acid-Base Theory

Q2: In crystal field theory, the splitting of d-orbitals in octahedral field gives rise to?

A. A) t2g and eg orbitals B. B) dx2-y2 and dz2 orbitals C. C) dxy and dxz orbitals D. D) degenerate orbitals

Q3: Which d-orbitals belong to the t2g set in an octahedral complex?

A. A) dxy, dyz, dzx B. B) dx2-y2, dz2 C. C) dxy, dx2-y2, dz2 D. D) dxz, dyz, dx2-y2

Q4: Which theory does not explain color in transition metal complexes?

A. A) Crystal Field Theory B. B) Ligand Field Theory C. C) Valence Bond Theory D. D) Molecular Orbital Theory

Q5: In an octahedral field, which set of orbitals experience more repulsion?

A. A) t2g B. B) eg C. C) both equally D. D) none

Q6: Which of the following is a low-spin complex?

A. A) [Fe(CN)6]4− B. B) [FeF6]3− C. C) [CoF6]3− D. D) [Cr(H2O)6]3+

Q7: Which ligand causes the greatest crystal field splitting?

A. A) H2O B. B) NH3 C. C) CN− D. D) F−

Q8: Which hybridization corresponds to a square planar geometry?

A. A) sp3 B. B) dsp2 C. C) sp2d D. D) d2sp3

Q9: Which of the following theories uses the concept of overlap of atomic orbitals?

A. A) Crystal Field Theory B. B) Molecular Orbital Theory C. C) Valence Bond Theory D. D) Electrostatic Theory

Q10: Which theory explains back bonding in carbonyl complexes?

A. A) VSEPR theory B. B) Valence Bond Theory C. C) Crystal Field Theory D. D) Molecular Orbital Theory

Q11: What is the geometry of a complex with sp3d2 hybridization?

A. A) Square planar B. B) Octahedral C. C) Tetrahedral D. D) Trigonal bipyramidal

Q12: Which metal complex is diamagnetic?

A. A) [Ni(CN)4]2− B. B) [NiCl4]2− C. C) [Fe(H2O)6]3+ D. D) [Cu(NH3)4]2+

Q13: Which of the following is true for Crystal Field Theory?

A. A) It considers covalent bonding B. B) It is based on electrostatic interactions C. C) It explains σ and π bonding D. D) It involves orbital overlap

Q14: What is the oxidation state of Fe in [Fe(CN)6]4−?

A. A) +2 B. B) +3 C. C) 0 D. D) −2

Q15: Which is a high-spin octahedral complex?

A. A) [Co(CN)6]3− B. B) [FeF6]3− C. C) [Fe(CN)6]3− D. D) [Ni(CN)4]2−

Q16: Which orbitals are involved in d2sp3 hybridization?

A. A) 1 s, 2 p, 3 d B. B) 2 d, 1 s, 3 p C. C) 2 d, 1 s, 3 p D. D) 2 d, 1 p, 3 s

Q17: In a tetrahedral field, which orbitals are raised in energy?

A. A) eg B. B) t2g C. C) Both equally D. D) None

Q18: Which theory better explains the color of complexes?

A. A) VBT B. B) CFT C. C) MOT D. D) Hybridization theory

Q19: Which complex exhibits inner orbital octahedral hybridization?

A. A) [Co(NH3)6]3+ B. B) [FeF6]3− C. C) [NiCl4]2− D. D) [Cu(NH3)4]2+

Q20: Which theory explains the splitting of d-orbitals due to ligand approach?

A. A) Lewis theory B. B) Crystal Field Theory C. C) Molecular Orbital Theory D. D) VSEPR theory