VillalonV30
VillalonV30 VillalonV30
  • 25-10-2018
  • Chemistry
contestada

What is the metal with 4 valence

electrons and a mass greater than 200?

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chrissywarnsley14 chrissywarnsley14
  • 25-10-2018

Francium is the heaviest of the alkali metals, with an atomic mass of 223 grams.

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