Science help me please
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oxygen is correct answer ok
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calcuim(ca) is the answer
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Calcium is a silvery-white metal; it is relatively soft, but much harder than ... Calcium is a member of the alkaline-earth metals (Group II on the periodic table); these metals react vigorously with water, although not as violently as the Group I metals such as sodium or potassium: Ca(s) + 2H2O(l) ——> Ca(OH)2(aq) + H2(g
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