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Chapter 3 Ions and Average atomic mass review
Element
Protons
Neutrons
Electrons
sodium
11
12
10
Mass
Number
23
21
52
36
84
18
32
24
Sulfur
Mercury
Charge
+1
neutral
120
35
45
Zinc
Full
Symbol
23
1
11 Na
+2
36
65
+2
64
29
Cu 1
162
66
137
56
2. Label the numbers of protons, neutrons and electrons for the following ion
3. What is the atomic mass for this element?
Isotope
Uus-284
Uus-285
Uus-288
Abundance
34.60%
21.20%
44.20%
7
3
Li 1
Dy
Ba 2
Give the number of protons, neutrons, and electrons in the following atom: (3 pts)
77
34
Se 2
____ protons
____ neutrons
____ electrons
. Give the full symbol for the element represented by the following picture: (3 pts)
Symbol
- proton
- neutron
- electron
V. Subatomic Particles. Complete the table: (15 pts)
Element
Protons
lithium
Neutrons
Electrons
4
2
8
36
49
29
fluorine
Charge
18
-2
36
28
19
Mass
Number
64
-1
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