Template talk:Periodic table legend
Latest comment: 9 years ago by Double sharp in topic Untitled discussion
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Untitled discussion edit
What is the atomic weight of polonium? Is it (209) or (210) as indicated periodic table?
- It's (209), as that's the polonium isotope with the longest known half-life. Double sharp (talk) 08:28, 30 March 2015 (UTC)
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