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1) (4 points) Promethium (atomic number = 61) has no known naturally occurring isotopes in Earth's crust. If promethium
Posted: Wed May 04, 2022 3:50 pm
by answerhappygod
- 1 4 Points Promethium Atomic Number 61 Has No Known Naturally Occurring Isotopes In Earth S Crust If Promethium 1 (32.62 KiB) Viewed 67 times
1) (4 points) Promethium (atomic number = 61) has no known naturally occurring isotopes in Earth's crust. If promethium did occur naturally with the following isotopes and abundances, what would be the atomic mass for promethium in amu's. (Calculate the weighted average from this data) Isotope symbol Isotope mass (amu) Abundance (%) 145pm 144.91 6.11 146pm 145.91 77.84 148pm 147.92 16.05