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Atkins' Physical Chemistry | 11th Edition | ISBN: 9780198769866 | Authors: Atkins, Peter; De Paula, Julio; Keeler, James ISBN: 9780198769866 2042

Solution for problem E9E.1(a) Chapter 9E

Atkins' Physical Chemistry | 11th Edition

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Atkins' Physical Chemistry | 11th Edition | ISBN: 9780198769866 | Authors: Atkins, Peter; De Paula, Julio; Keeler, James

Atkins' Physical Chemistry | 11th Edition

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Problem E9E.1(a)

Set up the secular determinants for (i) linear \(\mathrm{H}_{3}\), (ii) cyclic \(\mathrm{H}_{3}\) within the Hückel approximation.

Text Transcription:

H_3

Step-by-Step Solution:
Step 1 of 3

Chem 131 (10/10/16-10/21/16) Intro: here are the notes I’ve taken during Prof. Ondov’s lecture and from the textbook Chemistry: Structure and Properties 6th ed​ ition by Nivaldo J. Tro Chapter 6: Chemical Bonding Background [1970s]: endorphins, aka endogenous morphine, bind to other molecules. Morphine is a molecular imposter mimicking actions of endorphins due to shape. (VSEPR) valence shell electrons pair repulsion theory- ​ accounts for molecular shape for predictions about molecules’ shape 6.1 Shared electrons are not equally shared. δ +partial ​positive ​charge δ −partial ​negative ​charge polar- ​positive and negative poles electronegativity- ​the ability of an atom to attract electrons in a chemical bond ➢ The larger an atom, the weaker its ability to attract electrons. bond energy​- energy required to break a bond Bond polarity depends on difference in electronegativity (ΔE) between two bonding atoms. ➢ The greater the ΔE, the greater the polarity. IfΔE = 0in a covalent bond, then the atoms are shared equally and bond is purely covalent or nonpolar. IfΔE >> 0in an ionic bond, then the electrons are completely transferred to the nonmetal and bond is ionic. ΔE Bond Type 0 − 0.4 Nonpolar covalent 0.4 − 2.0 Polar covalent 2.0 + Ionic dipole moment (μ)- ​ occurs in a separation of positive and negative charge:

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Chapter 9E, Problem E9E.1(a) is Solved
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Textbook: Atkins' Physical Chemistry
Edition: 11
Author: Atkins, Peter; De Paula, Julio; Keeler, James
ISBN: 9780198769866

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