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Worksheets3.2 Oxidation #'s and Lewis Dot Diagrams
Total questions: 25
Worksheet time: 20mins
Name
Class
Date
1.
How many valence electrons does chlorine (Cl) have?
a)
2
b)
5
c)
6
d)
7
2.
How many valence electrons does carbon (C) have?
a)
3
b)
4
c)
5
d)
6
3.
Which of these elements has 8 valence electrons?
a)
P
b)
Be
c)
O
d)
Ar
4.
This is a correct dot diagram for oxygen (O)
a)
true
b)
false
5.
This is a correct dot diagram for fluorine (F)
a)
true
b)
false
6.
This is the correct dot diagram for sodium (Na)
a)
true
b)
false
7.
This is the correct dot diagram for nitrogen (N)
a)
true
b)
false
8.
This is a correct dot diagram for neon (Ne)
a)
true
b)
false
9.
This could be the dot diagram of
a)
Ne
b)
H
c)
C
d)
F
10.
This could be the dot diagram of
a)
Mg
b)
Cl
c)
C
d)
O
11.
This could be the dot diagram of
a)
O
b)
B
c)
Li
d)
Ne
12.
This could be the dot diagram of
a)
Be
b)
B
c)
C
d)
Ne
13.
This could be the dot diagram of
a)
Al
b)
Si
c)
Na
d)
Mg
14.
What is the oxidation number of Fe in FeO?
a)
+1
b)
-1
c)
+2
d)
-2
15.
What is the oxidation number of Ca in Ca3N2?
a)
+3
b)
+2
c)
-3
d)
-2
16.
What element's don't have oxidation numbers?
a)
alkali metals
b)
noble gases
c)
halogens
d)
alkaline earth metals
17.
The sum of all oxidation numbers in a neutral compound is ___.
a)
0
b)
1
c)
-1
d)
depends on the compound
18.
What is the oxidation number for Flourine (F)?
a)
+1
b)
-1
c)
17
d)
7
19.
All the elements in group 13 would have an oxidation number of ..
a)
+3
b)
-3
c)
0
20.
When naming an ionic compound with a ______ metal needs a Roman Numeral after its name.
a)
Alkali
b)
Alkaline-Earth
c)
Transition
d)
Metalloid
21.
A anion will be a ____ ion.
a)
negative
b)
positive
22.
A cation is a ____ ion.
a)
negative
b)
positive
23.
K + and N-3
a)
KN
b)
KN3
c)
K3N3
d)
K3N
24.
Ba +3 and Cl-
a)
Ba3Cl
b)
Ba3Cl3
c)
BaCl3
d)
BaCl
25.
Name the following compound: MgO
a)
Magnesium
b)
Magnesium Oxide
c)
Magnesium Oxygen
d)
Magnesium Oxate
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