General Chemistry: Atoms First
2nd Edition
ISBN: 9780321809261
Author: John E. McMurry, Robert C. Fay
Publisher: Prentice Hall
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Textbook Question
Chapter 5.6, Problem 5.14P
The B2 and C2 molecules have MO diagrams similar to that of N2 in Figure 5.12a. What MOs are occupied in B2 and C2, and what is the bond order in each? Would you expect either of these substances to be paramagnetic?
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Students have asked these similar questions
Consider a heteronuclear diatomic molecule, AB, where A
and B are period 2 elements.
Using the following pieces of information, provide details on
the molecular orbital diagram of AB:
Clue 1: The MO diagram of AB does not contain non-
bonding electrons.
Clue 2: The s and p orbital energies of both atoms are quite
close to one another that interactions between different
orbital types occur.
Clue 3: AB" is more stable than AB, but AB2 is less stable
than AB".
Clue 4: The potential energies of the atomic orbitals of A are
higher than the potential energies of the atomic orbitals of B.
Table 1. Atomic orbital energies of period 2 elements.
Atom
Orbital energy
Orbital energy
(2s)
(2p)
Li
-5.45
Ве
-9.30
B
-14.0
-8.30
C
-19.5
-10.7
-25.5
-13.1
-32.3
-15.9
F
-46.4
-18.7
Ne
-48.5
-21.5
1)Using molecular orbital theory, determine the electronic structure of the first excited electronic state of N2. What differences are expected in the properties of the excited state of N2 compared with the same properties of the ground state?
2)Describe the bonding (including σ and п bonds) on an N atom in dinitrogen difluoride, N2F2, using valence bond theory.
3)Magic numbers are associated with protons and neutrons in a nucleus. State the magic numbers for protons and neutrons, and give two evidences to support the existence of these magic numbers
a) The molecules SIF4, SF4 and XeF4 have molecular of the type AF4, but the
molecules have different molecular geometries. Predict the shape of each
molecules and explain why the shapes differ.
b) Compare the differences between molecular orbital diagram of Be2 and
BN in terms of bond order, magnetic properties (diamagnetic or
paramagnetic), level of atomic orbital and stability of the compound.
Chapter 5 Solutions
General Chemistry: Atoms First
Ch. 5.1 - Predict the shapes of the following molecules or...Ch. 5.1 - Acetic acid, CH3CO2H, is the main organic...Ch. 5.1 - Benzene, C6H6, is a cyclic molecule in which all...Ch. 5.1 - What is the geometrical arrangement of charge...Ch. 5.3 - Describe the bonding in propane, C3H8, a fuel...Ch. 5.4 - Describe the hybridization of the carbon atom in...Ch. 5.4 - Describe the hybridization of each carbon atom in...Ch. 5.4 - Describe the hybridization of the carbon atom in...Ch. 5.4 - Describe the hybridization of the carbon atom in...Ch. 5.4 - Describe the hybridization of the carbon atom in...
Ch. 5.4 - Identify each of the following sets of hybrid...Ch. 5.4 - The following ball-and-stick molecular model is a...Ch. 5.5 - Construct an MO diagram for the He2+ ion. Is this...Ch. 5.6 - The B2 and C2 molecules have MO diagrams similar...Ch. 5.7 - Draw two electron-dot resonance structures for the...Ch. 5.7 - Why is molecular shape so important in biological...Ch. 5.7 - Prob. 5.17CPCh. 5 - What is the geometry around the central atom in...Ch. 5 - Prob. 5.19CPCh. 5 - Prob. 5.20CPCh. 5 - Prob. 5.21CPCh. 5 - Prob. 5.22CPCh. 5 - Prob. 5.23CPCh. 5 - Prob. 5.24SPCh. 5 - Prob. 5.25SPCh. 5 - Prob. 5.26SPCh. 5 - How many charge clouds are there around central...Ch. 5 - Prob. 5.28SPCh. 5 - Prob. 5.29SPCh. 5 - What shape do you expect for each of the following...Ch. 5 - Prob. 5.31SPCh. 5 - Prob. 5.32SPCh. 5 - Prob. 5.33SPCh. 5 - What bond angles do you expect for each of the...Ch. 5 - Prob. 5.35SPCh. 5 - Prob. 5.36SPCh. 5 - Prob. 5.37SPCh. 5 - Prob. 5.38SPCh. 5 - A potential replacement for the chlorofluorocarbon...Ch. 5 - Prob. 5.40SPCh. 5 - Prob. 5.41SPCh. 5 - Prob. 5.42SPCh. 5 - Prob. 5.43SPCh. 5 - What hybridization do you expect for atoms that...Ch. 5 - Prob. 5.45SPCh. 5 - Prob. 5.46SPCh. 5 - What hybridization would you expect for the...Ch. 5 - Prob. 5.48SPCh. 5 - Prob. 5.49SPCh. 5 - Prob. 5.50SPCh. 5 - Prob. 5.51SPCh. 5 - Prob. 5.52SPCh. 5 - Prob. 5.53SPCh. 5 - Prob. 5.54SPCh. 5 - Prob. 5.55SPCh. 5 - Prob. 5.56SPCh. 5 - Prob. 5.57SPCh. 5 - Prob. 5.58SPCh. 5 - Prob. 5.59SPCh. 5 - Prob. 5.60SPCh. 5 - Prob. 5.61SPCh. 5 - Prob. 5.62CHPCh. 5 - The following molecular model is a representation...Ch. 5 - Prob. 5.64CHPCh. 5 - Prob. 5.65CHPCh. 5 - Prob. 5.66CHPCh. 5 - Prob. 5.67CHPCh. 5 - Calcium carbide, CaC2, reacts with water to...Ch. 5 - Prob. 5.69CHPCh. 5 - The N2O5 molecule has six NO bonds and two NO ...Ch. 5 - In the cyanate ion, OCN, carbon is the central...Ch. 5 - Aspirin has the following connections among atoms....Ch. 5 - Prob. 5.73CHPCh. 5 - At high temperatures, sulfur vapor is...Ch. 5 - Carbon monoxide is produced by incomplete...Ch. 5 - Prob. 5.76CHPCh. 5 - Prob. 5.77CHPCh. 5 - Prob. 5.78CHPCh. 5 - The diatomic cyanide ion (CN) and nitrosonium ion...Ch. 5 - Prob. 5.80MPCh. 5 - Prob. 5.81MPCh. 5 - Prob. 5.82MP
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