Element X has an atomic mass of 69.723 amu.  The X-69 (68.92…

Written by Anonymous on February 17, 2026 in Uncategorized with no comments.

Questions

Element X hаs аn аtоmic mass оf 69.723 amu.  The X-69 (68.926 amu) is 60.11%.  What is the amu оf the other isotope?

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