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Hipervinculo Física
Group 1 elements and their properties.
It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).
Hipervinculo Química
Compare what happens when various alkali metals react with water.
It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).
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