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Name:_____________________________________________Per:___________
Isotopes and Atom Building
Fill in the following table:
Element
Si - 28
Cs-134
P -31
LiBr - 80
Atomic #
Protons
14
Neutrons
55
Electrons
Mass #
28
15
31
79
24
3
28
3
45
16
13
3
80
Fill in the following isotope tables:
Te
Average Atomic Mass (AAM): 127.6
Most common isotope
Other likely isotope
As
Neutrons
Electrons
Mass #
128
Electrons
Mass #
75
AAM: 74.922
Most common isotope
Other likely isotope
Cl
Protons
52
Protons
33
Neutrons
74
AAM: 35.453
Protons
Most common isotope
Other likely isotope
Neutrons
Electrons
Mass #
36
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