Foundations of College Chemistry, Binder Ready Version
Foundations of College Chemistry, Binder Ready Version
15th Edition
ISBN: 9781119083900
Author: Morris Hein, Susan Arena, Cary Willard
Publisher: WILEY
Question
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Chapter 10, Problem 44PE

(a)

Interpretation Introduction

Interpretation:

The complete electronic configuration of Selenium has to be given.

Concept Introduction:

Aufbau’s principle:

Aufbau’s principle states that electrons are filled into atomic orbitals in the increasing order of orbital energy level.  According to the Aufbau principle the available atomic orbitals with the lowest energy levels are occupied before those with higher energy levels.

Foundations of College Chemistry, Binder Ready Version, Chapter 10, Problem 44PE

Figure 1

(b)

Interpretation Introduction

Interpretation:

The shorthand electronic configuration of selenium has to be given.

(c)

Interpretation Introduction

Interpretation:

The number of valence electrons in selenium has to be given.

Concept Introduction:

Valence electrons:

Valence shell is the outermost shell of an every element.  Atom of every element has different electronic configurations based on the atomic number of each element.  Valence electrons are those electrons that located in the outermost shell surrounding an atomic nucleus.

Example: Sodium

The atomic number of sodium is 11.

The electronic configuration of sodium is 1s22s22p63s1.

The outermost shell (valence shell) is 3s.

The valence electron is one.

(d)

Interpretation Introduction

Interpretation:

The valence electrons in the shorthand electronic configuration have to be underlined.

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2. Predict the NMR spectra for each of these two compounds by listing, in the NMR tables below, the chemical shift, the splitting, and the number of hydrogens associated with each predicted peak. Sort the peaks from largest chemical shift to lowest. **Not all slots must be filled** Peak Chemical Shift (d) 5.7 1 Multiplicity multiplate .......... 5.04 double of doublet 2 4.98 double of doublet 3 4.05 doublet of quartet 4 5 LO 3.80 quartet 1.3 doublet 6 Peak Chemical Shift (d) Multiplicity
Interpreting NMR spectra is a skill that often requires some amount of practice, which, in turn, necessitates access to a collection of NMR spectra. Beyond Labz Organic Synthesis and Organic Qualitative Analysis have spectral libraries containing over 700 1H NMR spectra. In this assignment, you will take advantage of this by first predicting the NMR spectra for two closely related compounds and then checking your predictions by looking up the actual spectra in the spectra library. After completing this assignment, you may wish to select other compounds for additional practice. 1. Write the IUPAC names for the following two structures: Question 2 Question 3 2. Predict the NMR spectra for each of these two compounds by listing, in the NMR tables below, the chemical shift, the splitting, and the number of hydrogens associated with each predicted peak. Sort the peaks from largest chemical shift to lowest. **Not all slots must be filled**
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Chapter 10 Solutions

Foundations of College Chemistry, Binder Ready Version

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