Honors Chemistry Worksheet Template Page 3
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1
2
3
410. Write the mass number, atomic number, number of electrons, protons and neutrons for the following isotopes.
207
109
Pb
Ag
a.
b.
82
47
mass # ____________
# neutrons _________
mass # ____________
# neutrons __________
atomic # __________
# electrons _________
atomic # ___________
# electrons __________
name _____________
# protons __________
name ______________
# protons ___________
. 226
257
Ra
Es
c
d.
88
99
mass # ____________
# neutrons _________
mass # ____________
# neutrons __________
atomic # __________
# electrons _________
atomic # ___________
# electrons __________
name _____________
# protons __________
name ______________
# protons ___________
11. Fill in all of the missing information.
isotope name
#p
#n
#e-
mass #
atomic #
isotope symbol
11
12
1
1
iodine-127
251
Cf
98
85
210
118
79
19
41
ytterbium-171
190
Os
76
9
10
12. Given the following information, calculate the atomic mass. Show all work.
28
32
a.
Si (92.21%)
b.
S (95.0%)
29
33
Si (4.70%)
S (0.8%)
30
34
Si (3.09%)
S (4.2%)
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