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