Question

Match each element with its correct number of valence electrons. (Remember for the representative elements, (Groups 1A-8A), the group number tells you the number of valence electrons.)





Column A
1.
Potassium (K):
Potassium (K)
2.
Aluminum (Al):
Aluminum (Al)
3.
Argon (Ar):
Argon (Ar)
4.
Selenium (Se):
Selenium (Se)
5.
Carbon (C):
Carbon (C)
6.
Astatine (At):
Astatine (At)
7.
Barium (Ba):
Barium (Ba)
8.
Arsenic (As):
Arsenic (As)
Column B
a.3 valence electrons
b.2 valence electrons
c.4 valence electrons
d.1 valence electron
e.5 valence electrons
f.7 valence electrons
g.6 valence electrons
h.8 valence electrons

Answer 1

Here is the matching of each element with its correct number of valence electrons:

1. Potassium (K): **d. 1 valence electron** (Group 1A)
2. Aluminum (Al): **a. 3 valence electrons** (Group 3A)
3. Argon (Ar): **h. 8 valence electrons** (Group 8A - noble gas)
4. Selenium (Se): **g. 6 valence electrons** (Group 6A)
5. Carbon (C): **c. 4 valence electrons** (Group 4A)
6. Astatine (At): **f. 7 valence electrons** (Group 7A)
7. Barium (Ba): **b. 2 valence electrons** (Group 2A)
8. Arsenic (As): **e. 5 valence electrons** (Group 5A)

Here’s the final answer summarized:

1. K - d
2. Al - a
3. Ar - h
4. Se - g
5. C - c
6. At - f
7. Ba - b
8. As - e