University:
Boston University
Course:
CAS CH 101 | General Chemistry 1
Academic year:

2020
Views:

123

Pages:

3
Author:

Jaylen Blackwell

Discussion #1 Answers: 1. 5 2. Atomic orbital 3. a. sp b. sp3, sp3 c. sp3 ; sp2; sp2 4. Draw correlation diagram for NH3 using hybridized AOs. 5. Using hybridized atomic orbitals, sketch the σ-frame for the MO structure for C2H6. Hint: first draw a Lewis structure, and determine steric number (SN) of the center atoms. 6. Using the sp2 hybrid orbitals, sketch σ-frame and π-frame structure for H2CCH2 7. Using the sp hybrid orbitals, sketch MO structure for HCCH. (Sketch σ-frame and π-frame, draw π-energy diagram) 8. D C 2p E B σ* 2s2s π* B 2s 2s F2 σ2s 2p F A A Fluorine D σ* 2p2p E π F σ 2p2p a. In the box to the right of the molecular orbitals formed in F2 above, provide the proper name of each molecular orbital (e.g. σ2s, π*, etc). b. Match each molecular orbital on the right to the molecular orbital diagram on the left. Show your answer by placing the letter in the circle beside the molecular orbital. Letter “B” is filled in for you. c. In the molecular orbital diagram above, populate both the atomic and molecular orbitals with electrons by putting arrows on the horizontal lines for F2 and the fluorine atoms. All three systems are in the ground state. d. Using the diagram above to guide you, calculate the bond orders for the following species. F2+ : ___1.5__________ F22- : ___0__________ 3