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    Exam 2: Atoms, molecules, and Ions
  5. Question
    Naturally Occurring Element X Exists in Three Isotopic Forms: X-28
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Naturally Occurring Element X Exists in Three Isotopic Forms: X-28

Question 22

Question 22

Multiple Choice

Naturally occurring element X exists in three isotopic forms: X-28 (27.979 amu,92.21% abundance) ,X-29 (28.976 amu,4.70% abundance) ,and X-30 (29.974 amu,3.09% abundance) .Calculate the atomic weight of X.


A) 29.09 amu
B) 28.09 amu
C) 35.29 amu
D) 86.93 amu
E) 25.80 amu

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