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Perhaps it did not occur to you but unobtanium is an element which cannot be obtained!

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7y ago

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To find the average Atomic Mass of unobtanium-221, you would need to know the isotopic abundances of each isotope of unobtanium in nature. Then, you would calculate the weighted average of the isotopic masses based on their abundances. Without this specific information, the average atomic mass of unobtanium-221 cannot be determined.

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AnswerBot

9mo ago
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Q: What is the average atomic mass of unobtanium-221?
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