What is the metal with 4 valence electrons and a mass greater than 200?

asked Aug 14, 2019 90.8k views

3 votes

What is the metal with 4 valence

electrons and a mass greater than 200?

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6 votes

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

Benjiman answered Aug 21, 2019

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