For the following pairs of molecular orbitals, indicate the one you expect to have the lower energy, and state the reason for your choice. (a) σ l 8 or σ l 8 4 ; (b) σ 2 r or σ 2 r − ; (c) σ l 8 4 or σ 2 r 4 ; (d) σ 2 p or σ 2 p 4 .
For the following pairs of molecular orbitals, indicate the one you expect to have the lower energy, and state the reason for your choice. (a) σ l 8 or σ l 8 4 ; (b) σ 2 r or σ 2 r − ; (c) σ l 8 4 or σ 2 r 4 ; (d) σ 2 p or σ 2 p 4 .
Solution Summary: The author explains the molecular orbital theory, which is used to explain the chemical bonding of molecule by electronic configuration.
For the following pairs of molecular orbitals, indicate the one you expect to have the lower energy, and state the reason for your choice. (a)
σ
l
8
or
σ
l
8
4
; (b)
σ
2
r
or
σ
2
r
−
; (c)
σ
l
8
4
or
σ
2
r
4
; (d)
σ
2
p
or
σ
2
p
4
.
The drawing below shows the overlap of two hybrid orbitalsto form a bond in a hydrocarbon. (a) Which of the followingtypes of bonds is being formed: (i) C¬C σ, (ii) C¬C π,or (iii) C¬H σ? (b) Which of the following could be theidentity of the hydrocarbon: (i) CH4, (ii) C2H6, (iii) C2H4, or(iv) C2H2?
Show, if overlap is ignored, (a) that any molecular orbital expressed as a linear combination of two atomic orbitals may be written in the form ψ = ψA cos θ + ψB sin θ. where θ is a parameter that varies between 0 and π/2, and (b) that if ψA and ψB are orthogonal and normalized to 1, then ψ is also normalized to 1. (c) To what values of θ do the bonding and antibonding orbitals in a homonuclear diatomic molecule correspond?
Show, if overlap is ignored, (a) that if a molecular orbital is expressed as a linear combination of two atomic orbitals in the form ψ = ψA cos θ + ψB sin θ, where θ is a parameter that varies between 0 and π, with ψA and ψB are orthogonal and normalized to 1, then ψ is also normalized to 1. (b) To what values of θ do the bonding and antibonding orbitals in a homonuclear diatomic molecule correspond?
Chapter 11 Solutions
General Chemistry: Principles And Modern Applications Plus Mastering Chemistry With Pearson Etext -- Access Card Package (11th Edition)
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Quantum Molecular Orbital Theory (PChem Lecture: LCAO and gerade ungerade orbitals); Author: Prof Melko;https://www.youtube.com/watch?v=l59CGEstSGU;License: Standard YouTube License, CC-BY