Molecular Orbital Theory

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Q. What is the molecular orbital configuration of F2?
  • A. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)⁴(π*2p)²
  • B. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)⁴
  • C. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(π2p)⁴(π*2p)²
  • D. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)³(π*2p)²
Q. What is the molecular orbital configuration of O2?
  • A. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)²(π*2p)¹
  • B. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)²(π*2p)²
  • C. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)³
  • D. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)²(π*2p)⁴
Q. What is the molecular orbital configuration of the F2 molecule?
  • A. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)⁴(π*2p)²
  • B. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)⁴(π*2p)⁴
  • C. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)⁴(π*2p)¹
  • D. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)³(π*2p)²
Q. What is the molecular orbital configuration of the O2 molecule?
  • A. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)²(π*2p)¹
  • B. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)²(π*2p)²
  • C. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)¹(π*2p)¹
  • D. (σ1s)²(σ*1s)²(σ2s)²(σ*2s)²(σ2p)²(π2p)¹(π*2p)²
Q. What is the shape of the molecular orbital in the case of a π bond?
  • A. Spherical
  • B. Dumbbell
  • C. Linear
  • D. Planar
Q. What is the shape of the molecular orbital in the highest occupied molecular orbital (HOMO) of benzene?
  • A. Linear
  • B. Trigonal planar
  • C. Tetrahedral
  • D. Cyclic
Q. What is the shape of the molecular orbital of the highest energy in O2?
  • A. spherical
  • B. dumbbell
  • C. double dumbbell
  • D. linear
Q. What is the shape of the molecular orbital of the highest energy in the O2 molecule?
  • A. Linear
  • B. Bent
  • C. Planar
  • D. Diatomic
Q. Which of the following diatomic molecules has a bond order of 1?
  • A. N2
  • B. O2
  • C. H2
  • D. F2
Q. Which of the following diatomic molecules has the highest bond order?
  • A. N2
  • B. O2
  • C. F2
  • D. He2
Q. Which of the following has a bond angle of approximately 120 degrees?
  • A. H2O
  • B. NH3
  • C. BF3
  • D. CH4
Q. Which of the following has a bond order of 0?
  • A. He2
  • B. H2
  • C. N2
  • D. O2
Q. Which of the following has a bond order of 1?
  • A. N2
  • B. O2
  • C. H2
  • D. F2
Q. Which of the following has the highest bond order?
  • A. N2
  • B. O2
  • C. F2
  • D. C2
Q. Which of the following has the lowest bond energy?
  • A. N2
  • B. O2
  • C. F2
  • D. Cl2
Q. Which of the following has the lowest bond order?
  • A. O2
  • B. F2
  • C. N2
  • D. He2
Q. Which of the following molecular orbitals is filled first according to the Aufbau principle?
  • A. σ1s
  • B. σ*1s
  • C. π2p
  • D. σ2p
Q. Which of the following molecular orbitals is lower in energy than the 2p atomic orbitals?
  • A. σ2s
  • B. σ*2s
  • C. π2p
  • D. σ2p
Q. Which of the following molecules has a bond order of 1?
  • A. H2
  • B. He2
  • C. Li2
  • D. B2
Q. Which of the following molecules has a bond order of 2?
  • A. O2
  • B. N2
  • C. C2
  • D. F2
Q. Which of the following molecules has a higher bond order than N2?
  • A. O2
  • B. C2
  • C. B2
  • D. F2
Q. Which of the following molecules has a higher bond order: N2 or O2?
  • A. N2
  • B. O2
  • C. Both are equal
  • D. Cannot be determined
Q. Which of the following molecules has a triple bond?
  • A. N2
  • B. O2
  • C. H2
  • D. F2
Q. Which of the following molecules has the highest bond order?
  • A. N2
  • B. O2
  • C. F2
  • D. C2
Q. Which of the following molecules is diamagnetic?
  • A. O2
  • B. N2
  • C. F2
  • D. NO
Q. Which of the following molecules is isoelectronic with N2?
  • A. O2
  • B. C2
  • C. F2
  • D. Ne
Q. Which of the following molecules is isoelectronic with Ne?
  • A. O2
  • B. F2
  • C. N2
  • D. C2
Q. Which of the following molecules is predicted to be stable according to molecular orbital theory?
  • A. He2
  • B. Li2
  • C. Be2
  • D. B2
Q. Which of the following pairs of atoms will form a bond with the highest bond order?
  • A. C and O
  • B. N and O
  • C. C and N
  • D. O and O
Q. Which of the following pairs of atoms will form a stable diatomic molecule according to molecular orbital theory?
  • A. N and O
  • B. O and F
  • C. C and N
  • D. B and O
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