1 / 10

Which one of the following statements is false ?

Which one of the following statements is false ?. Valence bond theory and molecular orbital theory can be described as two different views of the same thing.

ejulie
Download Presentation

Which one of the following statements is false ?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Which one of the following statements is false? • Valence bond theory and molecular orbital theory can be described as two different views of the same thing. • When one considers the molecular orbitals resulting from the overlap of any two specific atomic orbitals, the bonding orbitals are always lower in energy than the antibonding orbitals. • Molecular orbitals are generally described as being more delocalized than hybridized atomic orbitals. • One of the shortcomings of molecular orbital theory is its inability to account for a triple bond in the N2 molecule. • One of the shortcomings of valence bond theory is its inability to account for the paramagnetism of O2.

  2. What is the bond order of a species with 7 bonding electrons and 4 antibonding electrons? • 1 • 1.5 • 2 • 2.5 • 3

  3. Draw the molecular orbital diagram for N2. The number of electrons in the {image} molecular orbital is _____. • 1 • 2 • 3 • 4 • zero

  4. Draw the molecular orbital diagram for F2. The number of electrons in the {image} molecular orbital is _____. • 1 • 2 • 3 • 4 • zero

  5. What is the bond order for F2? • 1 • 2 • 3 • 4.5 • 2.5

  6. Which response lists only the molecules given below that are not paramagnetic? B2, C2, N2, O2, F2 • N2 and F2 • N2 and O2 • B2 and O2 • B2 and N2 • all of these

  7. What diatomic molecule and/or ion(s) would have the molecular orbital electron configuration given below? {image} • O2- and F2+ • O2and F2 • F2- and Ne2+ • F2 and O2- • O2+ and F2-

  8. Which response lists all the following diatomic molecules and ions that are paramagnetic? Be2, B2, B22+, C22+, C22, O2-, O22- • B22+, C22+, and O22- • Be2 and B2 • B2, C22+, and C22- • B2, C22+, and O22- • B2, C22+, and O2-

  9. Which of the following statements concerning homonuclear diatomic molecules of the third and subsequent periods is false? • The heavier halogens, Cl2, Br2, and I2, which contain only sigma (single) bonds, are the only well-characterized examples at room temperature. • Other homonuclear diatomic species (other than the halogens) are neither common nor very stable. • The heavier elements are unstable because they cannot form strong pi bonds with each other. • For these larger atoms the sigma bond length is too great to allow the atomic p orbitals on different atoms to overlap side-on-side effectively. • All of the above statements explain why P2 is much more stable than N2.

  10. What is the bond order for NO? • 0.5 • 1 • 1.5 • 2 • 2.5

More Related