Magnesium (Mg), Calcium (Ca), and Barium (Ba) are all in the same group on the periodic table. What do these elements have in common?
They all have the same atomic number.
They all have the same number of electrons.
They all react with substances in similar ways.
They were all discovered by Dmitri Mendeleev.
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Magnesium (Mg), Calcium (Ca), and Barium (Ba) are all in the same group on the periodic table. What...
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