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Get Full Access to Atkins' Physical Chemistry - 11 Edition - Chapter 10c - Problem P10c.8
Get Full Access to Atkins' Physical Chemistry - 11 Edition - Chapter 10c - Problem P10c.8

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ISBN: 9780198769866 2042

## Solution for problem P10C.8 Chapter 10C

Atkins' Physical Chemistry | 11th Edition

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Atkins' Physical Chemistry | 11th Edition

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Problem P10C.8

Consider the molecule $$\mathrm{F}_{2} \mathrm{C}=\mathrm{CF}_{2}$$ (point group $$D_{2 \mathrm{~h}}$$), and take it as lying in the xy-plane, with x directed along the C–C bond. (a) Consider a basis formed from the four $$2 \mathrm{p}_{z}$$ orbitals from the fluorine atoms: show that the basis spans $$\mathrm{B}_{1 \mathrm{u}}$$, $$\mathrm{B}_{2 \mathrm{g}}$$, $$\mathrm{B}_{3 \mathrm{g}}$$, and $$A_{u}$$. (b) By applying the projection formula to one of the $$2 \mathrm{p}_{z}$$) orbitals, generate the SALCs with the indicated symmetries. (c) Repeat the process for a basis formed from four $$2 p_{x}$$ orbitals (the symmetry species will be different from those for $$2 \mathrm{p}_{z}$$).

Text Transcription:

F_2C=CF_2

D_2h

2p_z

B_1u

B_2g

A_u

2p_x

2p_z

Step-by-Step Solution:
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Chemistry II Unique Properties of Water:  Water is a liquid at room temperature. o Water’s high boiling point is due to hydrogen bonding between water molecules.  Water is an excellent solvent, dissolving many ionic and polar molecular substances. o It has a large dipole moment.  Water has a very high specific heat for a molecular substance.  Ice is less dense than water. o Water expands about 9% when it freezes at a pressure of 1 atm. Phase Diagrams:  The lines represent phase changes  The liquid/gas line is the vaporization curve  The solid/liquid curve is the fusion curve  The solid/gas curve is the sublimation curve  On the line, both phases are in equilibrium with each other  At the triple point, all three states exist in equilibrium. 1 Chemistry II Structures and Types of Solids:  Amorphous Solids­ disorder in the structures o Glass  Crystalline Solids­ has a regular, ordered arrangement of its components. o The arrangement is usually represented by a lattice, a 3­D system of points giving the positions of the components. o The components can be atoms, ions, or molecules. o Unit cell­ the smallest repeating unit of a lattice structure.  Types of Crystalline Solids o Molecular Solids – discrete coval

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