Mikhail Nikolayevich If Heaven made someone, earth can find some use for them
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20 months ago
two is the alkaline earth metals: Beryllium (Be), Magnesium (Mg), Calcium (Ca), Strontium (Sr), Barium (Ba), and Radium (Ra).
The photo comes from the Wikipedia entry on alkaline earth metal and it does not show Ra.
Radium has a low availability and is highly radioactive, making it toxic to life.
