Three of the four molecular orbitals for cyclobutadiene are pictured here. Place them in order of

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Three of the four π molecular orbitals for cyclobutadiene are pictured here. Place them in order of increasing energy. (See Figures 9.13, 9.15, 9.16, and 9.18 and the relation of orbital energy and nodes.)Orbital B Orbital A Orbital C

Data given in Figure 9.13

ENERGY 15 + 1s + 1s Nodal plane 15 a-molecular orbital (bonding) (a) Bonding and antibonding a-molecular

Data given in Figure 9.15

ENERGY 201 + 201 + 2Pz Nodal plane 00 2p, molecular orbital (antibonding) 2pz (a) Sigma () molecular orbitals

Data given in Figure 9.16

ENERGY 2p 2p 2p 25 1s atomic orbitals 2p 2p 2p 015 molecular orbitals for B, C, and N 2p 2p 2p 2s 1s atomic

Data given in Figure 9.18

ENERGY TT antibonding MOS   T bonding MOS

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Chemistry And Chemical Reactivity

ISBN: 9780357001172

10th Edition

Authors: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

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