Which of the following represent isotopes? 56 A: X 26 56 B: X 27 O A and D A and C O C and D B and C all of the above C: 55 26 58 D: X 28

Chemistry & Chemical Reactivity
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ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
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Chapter2: Atoms Molecules And Ions
Section: Chapter Questions
Problem 18PS: Which of the following are isotopes of element X, the atomic number for which is 9: 919X, 920X,...
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Hello!

So, my question is, how can I tell if an atom is an isotope when the atom's element is unknown, and the only information that is given is its atomic mass and number? I think you would just multiple the atomic number by 2 and that should equal or roughly be close to the atomic mass, but I'm not sure, that's why I'm asking.

Thanks!

Which of the following represent isotopes?
56
A: X
26
A and D
A and C
C and D
B and C
O all of the above
56
B: X
27
C:
55
26
D:
58
28
X
Transcribed Image Text:Which of the following represent isotopes? 56 A: X 26 A and D A and C C and D B and C O all of the above 56 B: X 27 C: 55 26 D: 58 28 X
Expert Solution
Step 1

The given information is as follows:

A: X2656               B: X2756             C: X2655                D: X2858

Isotopes = ?

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