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218 is the Atomic Mass of the Polonium isotope.

Polonium is a naturally radioactive metallic element, occurring in minute quantities as a product of radium disintegration and produced by bombarding bismuth or lead with neutrons. It has 27 isotopes ranging in mass number from 192 to 218, of which Po 210, with a half-life of 138.39 days, is the most readily available. Atomic number 84; melting point 254°C; boiling point 962°C; specific gravity 9.32; valence 2, 4.

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15y ago
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The isotopic mass, rounded to the nearest integer.

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10y ago
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Q: What does the number 218 in polonium 218 mean?
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