Solution Manual For Organic Chemistry: A Guided Inquiry, 2nd Edition
Stay on top of your textbook work with Solution Manual For Organic Chemistry: A Guided Inquiry, 2nd Edition, a guide offering complete solutions for every exercise.
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ChemActivity 1: Bond Angles and Shape
(What are the bond angles and shape of CH 4 ?)
Model 1: Planetary Model of an Atom
In a planetary model of an atom, negatively charged electrons (–1 each) are arranged around a
positively charged nucleus (+Z = nuclear charge) in a series of shells that look like orbits.
+1
= electron
+6 +7 +8 +9 +10
H C N O F Ne
shell #1
shell #2
Figure 1.1: Valence Shell Representations of Hydrogen, Carbon, Nitrogen, Oxygen, Fluorine, and Neon
core electrons = electrons in any inner shell(s) (don’t participate in bonding)
core atom = the nucleus (made up of protons and neutrons) plus the core electrons
valence electrons = electrons in the outermost shell (participate in bonding)
valence shell = outermost shell, where valence electrons are found
Electrons DO NOT “orbit” the nucleus like the planets orbit the sun. In ChemActivity 3 we will study a more complex model
in which electrons are described as inhabiting 3-dimensional regions of space called “orbitals” (1s, 2s, 2px, 2py, 2pz, 3s, etc.).
Critical Thinking Questions
1. (E) What does the number (+Z) at the center of each atom in Figure 1.1 represent, and what
number would you expect at the center of a representation of a bromine atom (Br)?
2. (E) How many total electrons does an oxygen atom have, and how could you find the answer to
this using a periodic table?
3. (E) How many valence electrons does each atom in Figure 1.1 have, and what number on a
periodic table gives you these answers?
4. What is the maximum number of electrons that can fit in…
a. (E) shell No. 1?
b. (E) shell No. 2 (Neon has a full Shell No. 2)?
c. Describe how the answers to a) and b) are contained in the structure of the periodic table.
(What are the bond angles and shape of CH 4 ?)
Model 1: Planetary Model of an Atom
In a planetary model of an atom, negatively charged electrons (–1 each) are arranged around a
positively charged nucleus (+Z = nuclear charge) in a series of shells that look like orbits.
+1
= electron
+6 +7 +8 +9 +10
H C N O F Ne
shell #1
shell #2
Figure 1.1: Valence Shell Representations of Hydrogen, Carbon, Nitrogen, Oxygen, Fluorine, and Neon
core electrons = electrons in any inner shell(s) (don’t participate in bonding)
core atom = the nucleus (made up of protons and neutrons) plus the core electrons
valence electrons = electrons in the outermost shell (participate in bonding)
valence shell = outermost shell, where valence electrons are found
Electrons DO NOT “orbit” the nucleus like the planets orbit the sun. In ChemActivity 3 we will study a more complex model
in which electrons are described as inhabiting 3-dimensional regions of space called “orbitals” (1s, 2s, 2px, 2py, 2pz, 3s, etc.).
Critical Thinking Questions
1. (E) What does the number (+Z) at the center of each atom in Figure 1.1 represent, and what
number would you expect at the center of a representation of a bromine atom (Br)?
2. (E) How many total electrons does an oxygen atom have, and how could you find the answer to
this using a periodic table?
3. (E) How many valence electrons does each atom in Figure 1.1 have, and what number on a
periodic table gives you these answers?
4. What is the maximum number of electrons that can fit in…
a. (E) shell No. 1?
b. (E) shell No. 2 (Neon has a full Shell No. 2)?
c. Describe how the answers to a) and b) are contained in the structure of the periodic table.
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Subject
Chemistry