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

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

electrons and a mass greater than 200?

User Crembo
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1 Answer

6 votes

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

User Benjiman
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