Multiple Choice
Naturally occurring element X exists in three isotopic forms: X-28 (27.979 u,90.64% abundance) ,X-29 (28.976 u,4.00% abundance) ,and X-30 (29.974 u,5.36% abundance) .Calculate the atomic weight of X.
A) 29.64 u
B) 28.13 u
C) 28.99 u
D) 29.83 u
E) 27.15 u
Correct Answer:

Verified
Correct Answer:
Verified
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