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Neutrons
Test Description: Determination of the # of neutrons from atomic # and mass
Instructions: Answer all questions to get your test result.
1) # of neutrons in F with atomic #9 and atomic mass 18.998
A
10
B
9
C
19
D
average of 9.998 and probably 10 in primary isotope
2) # of neutrons in H with atomic #1 and atomic mass 1.008
A
average of 0.008 and probably 0 in primary isotope
B
2
C
average of 1.008 and probably 1 in primary isotope
D
1
3) # of neutrons in Cl with atomic 17 and atomic mass 35.453
A
18
B
17
C
35
D
average of 18.453 with more than one abundant isotope
4) # of neutrons in C with atomic #6 and atomic mass 12.011
A
average of 6.011 and probably 6 in primary isotope
B
18
C
12
D
7
5) # of neutrons in uranium with atomic #92 and mass 238.03
A
238
B
average of 146.03 and probably 146 in primary isotope
C
92
D
235
6) #neutrons in sodium with atomic #11 and mass 22.99
A
average of 11.99 and probably 12 in primary isotope
B
23
C
12
D
11
7) #neutrons in copper with atomic #29 and mass 63.546
A
29
B
none of the other answers
C
average of 63.546 and probably at least two isotopes
D
64
8) #neutrons in copper with atomic #18 and mass 39.948
A
18
B
average of 21.958 and probably 22 in primary isotope
C
40
D
21
9) #neutrons in copper with atomic #30 and mass 65.39
A
65
B
35
C
30
D
average of 35.39 and at least 2 common isotopes
10) #neutrons in oxygen with atomic #8 and mass 15.999
A
9
B
16
C
average of 7.999 and probably 8 in primary isotope
D
7
*select an answer for all questions
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