Lesson 6: Wrap Up
In this lesson we have dealt with only a few of the properties that can be related to the periodic table. Those properties were selected because they are the most important for explaining chemical bonding and chemical reactions, which is what you will need to understand as we continue through the course. There are many other properties that could have been considered. In fact, a few of them will come up in future lessons.
That completes the presentation of this lesson. As you review this lesson, I recommend that you be sure to look at each of the objectives on the objective sheet. Also, take the self quiz and make sure that you get answers for any unresolved question that you may have. You have a problem set from your workbook for this lesson. You also have a lab report from your workbook to turn in. You do need to type it on a separate sheet; you can find details about the format in the workbook at the beginning of Ex. 13.
Self Quiz | Answers to Self Quiz
Self Quiz
Use a periodic table with this quiz. (Don't use a table that has the electron configurations written out.)
1. Give the symbols of two elements in the fourth period:
2. Give the symbols of two transition metals:
3. Give the symbols of two inert gases:
4. Give the symbol of an element similar in properties to Br:
5. Give the symbol of the element in the third period and second group:
6. Is Zn a metal or nonmetal?
7. How many valence electrons does Na have?
8. How many valence electrons does Cl have? Draw the Lewis structure (dot diagram) for it.
9. What is the outermost electron structure for Co?
10. Which atom is larger--Sr or Ca?
11. Why?
12. What is ionization energy?
13. Which has the higher ionization energy--Na or Mg?
14. Why?
15. Which has more attraction for its valence electrons--F or Cl?
16. Why?
17. Metals react by _____________________ electrons.
18. Which is more reactive--K or Li?
19. Nonmetals react by ____________________ electrons.
20. Which is more reactive--Cl or S?
Answers to Self Quiz
1. Give the symbols of two elements in the fourth period:
Any two of the following:
| K | Ca | Sc | Ti | V | Cr | Mn | Fe | Co | Ni | Cu | Zn | Ga | Ge | As | Se | Br | Kr |
2. Give the symbols of two transition metals:
Any two of the following:
| Sc | Ti | V | Cr | Mn | Fe | Co | Ni | Cu | Zn | ||
| Y | Zr | Nb | Mo | Tc | Ru | Rh | Pd | Ag | Cd | ||
| La | * | Hf | Ta | W | Re | Os | Ir | Pt | Au | Hg | |
| Ac | § | ||||||||||
. Give the symbols of two inert gases:
Any two of the following:
|
|
|
|
|
|
4. Give the symbol of an element similar in properties to Br:
Any of the other halogens: F, Cl, I, At
5. Give the symbol of the element in the third period and second group:
Mg
6. Is Zn a metal or nonmetal?
metal
7. How many valence electrons does Na have?
one
8. How many valence electrons does Cl have? Draw the Lewis structure (dot diagram) for it.
seven . .
: Cl :
.
9. What is the outermost electron structure for Co?
3d7
10. Which atom is larger--Sr or Ca?
Sr
11. Why?
It has more electron energy levels.
12. What is ionization energy?
It is the energy required to remove one electron from an atom.
13. Which has the higher ionization energy--Na or Mg?
Mg
14. Why?
It has a higher effective nuclear charge (and the valence electrons are in the same energy level).
15. Which has more attraction for its valence electrons--F or Cl?
F
16. Why?
It has fewer energy levels, thus the electrons are closer to the nucleus (and they have the same effective nuclear charge).
17. Metals react by __losing__ electrons.
18. Which is more reactive--K or Li?
K
19. Nonmetals react by __gaining__ electrons.
20. Which is more reactive--Cl or S?
Cl