Chemistry in Context
8th Edition
ISBN: 9780073522975
Author: American Chemical Society
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 2, Problem 9Q
Consider this representation of a periodic table.
- a. What is the group number of the shaded column?
- b. Which elements make up this group?
- c. What is the number of electrons for a neutral atom of each element in this group?
- d. What is the number of outer electrons for a neutral atom of each element of this group?
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a. List three elements that have 2 electrons in their valence shell.
b. List three elements that have filled valence shells.
c. List three elements that are one electron short of having a filled valence shell
III. Periodic Properties
A. Answer the following questions about elements and their properties based on their position on
the periodic table.
1. For main group elements (A), the number of valence electrons is indicated by what number on
the periodic table?
2. How many valence electrons does a neutral atom of sulfur contain?
3. Which main group has 2 valence electrons?
4. As you down a group (column), what happens to the size of the atoms?
5. Which atom would be larger, Ge or Se?
IV. Electron
A. Fill in the following chart relating to levels, sublevels and orbitals.
# of Orbitals
per sublevel
# of Electrons
per sublevel
Levels (n)
1
2
3
mer
4
Sublevels
B. Answer the following questions related to levels, sublevels, orbitals and electrons.
1. How many sublevels are in energy level 2?
2. How many orbitals are in a 4f sublevel?
3. How many electrons can level 3 hold?
4. How many orbitals are in level 4?
Total Electrons
per level
5. How many electrons can sublevel 2p hold?
10
identify the follwing atoms using their symbols
d.the fifth period transition metal with properties similar to copper.
e. the group V A metalloid in the fifth period.
f. the lightest metallic element in group IV A.
g. the fouth period element with properties similar to oxyhen
Chapter 2 Solutions
Chemistry in Context
Ch. 2.1 - Prob. 2.3CTCh. 2.6 - Prob. 2.15CTCh. 2.7 - Prob. 2.17CTCh. 2.7 - Prob. 2.19SCCh. 2.7 - The indoor tanning industry runs a public...Ch. 2.7 - Prob. 2.21CTCh. 2.8 - Prob. 2.22CTCh. 2.8 - Prob. 2.23YTCh. 2.11 - Prob. 2.27CTCh. 2.13 - Prob. 2.30CT
Ch. 2.13 - Prob. 2.32CTCh. 2 - How does ozone differ from oxygen in its chemical...Ch. 2 - Prob. 2QCh. 2 - Prob. 3QCh. 2 - Prob. 4QCh. 2 - Prob. 5QCh. 2 - Prob. 6QCh. 2 - a. What is a Dobson unit? b. Does a reading of 320...Ch. 2 - Using the periodic table as a guide, specify the...Ch. 2 - Consider this representation of a periodic table....Ch. 2 - Give the name and symbol for the element with this...Ch. 2 - Give the number of protons, neutrons, and...Ch. 2 - Give the symbol showing the atomic number and the...Ch. 2 - Prob. 13QCh. 2 - Assuming that the octet rule applies, draw the...Ch. 2 - Prob. 15QCh. 2 - Consider these two waves representing different...Ch. 2 - Prob. 17QCh. 2 - Prob. 18QCh. 2 - Arrange these types of radiation in order of...Ch. 2 - The microwaves in home microwave ovens have a...Ch. 2 - Ultraviolet radiation is categorized as UVA, UVB,...Ch. 2 - Prob. 22QCh. 2 - Prob. 23QCh. 2 - Prob. 24QCh. 2 - Prob. 25QCh. 2 - The following free radicals all play a role in...Ch. 2 - a. How were the original measurements of increases...Ch. 2 - Prob. 28QCh. 2 - The EPA has used the slogan Ozone: Good Up High,...Ch. 2 - Nobel Laureate F. Sherwood Rowland referred to the...Ch. 2 - Prob. 31QCh. 2 - Prob. 32QCh. 2 - Prob. 33QCh. 2 - Prob. 34QCh. 2 - Prob. 35QCh. 2 - Prob. 36QCh. 2 - The average length of an OO single bond is 132 pm....Ch. 2 - Prob. 38QCh. 2 - Prob. 39QCh. 2 - Prob. 40QCh. 2 - All the reports of the damage caused by UV...Ch. 2 - Prob. 42QCh. 2 - Prob. 43QCh. 2 - Prob. 44QCh. 2 - Development of the stratospheric ozone hole has...Ch. 2 - Prob. 46QCh. 2 - One mechanism that helps break down ozone in the...Ch. 2 - Polar stratospheric clouds (PSCs) play an...Ch. 2 - Prob. 49QCh. 2 - Prob. 50QCh. 2 - Resonance structures can be used to explain the...Ch. 2 - Prob. 52QCh. 2 - Prob. 53QCh. 2 - Many different types of ozone generators...Ch. 2 - The effect a chemical substance has on the ozone...Ch. 2 - Prob. 56Q
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- What is the electron configuration of Mg2+? How does its reactivity compare with neutral Mg? How do the reactivities of F- and F compare?arrow_forwardHow many valence electrons are in each element of problem 28?arrow_forwardWe have seen that the reactivity of an element is determined by its electron configuration. What is the electron configuration of the ion Cl-? (Hint: You must add one additional electron beyond the number of electrons that chlorine would normally have.) How does its reactivity compare with neutral Cl? How would the reactivities of Na and Na+ compare?arrow_forward
- lton believed that atoms were indivisible. Thomson and Rutherford helped to show that this was not true. What if atoms were indivisible? How would this affect the types of reactions you have learned about in this chapter?arrow_forwardMark the following statements as true or false. If a statement is false, correct it to make a true statement. a. The mass number of an atom is the sum of its neutrons and protons. b. Electrons travel in orderly, circular orbits around the nucleus. c. Protons and neutrons have a positive charge and electrons have a negative charge. d. Valence electrons are the electrons in the outermost shell of an atom. e. Every element has a characteristic number of protons, which is called the element’s mass number.arrow_forwardWhich element in each pair has its valence electrons farther from the nucleus? a. sodium and magnesium b. carbon and fl uorine c. neon and krypton d. argon and brominearrow_forward
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