Promethium's Atomic Weight: The 72.61g Mole Question

Promethium is a chemical element with symbol pm and atomic number 61. All of its isotopes are radioactive; Calculate the molar mass of promethium in grams per mole or search for a chemical formula or substance.

Promethium is a chemical element with symbol pm and atomic number 61. All of its isotopes are radioactive; Calculate the molar mass of promethium in grams per mole or search for a chemical formula or substance. Furthermore, the atomic mass of promethium is 145. That means that one mole of promethium weighs 145 grams (145 g/mol).

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