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Lec13-chem - Review Size matters within the periodic trends...

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When a covalent oxide is dissolved in water an acidic solution is formed: CO 2 (g) + H 2 O(l) ° H 2 CO 3 (aq) Review Size matters within the periodic trends DEMO!
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Group I elements (alkali metals) Their reactions with O 2 : Li and H are the only two elements in group I to form X 2 O species with O 2 (g): 2H 2 (g) + O 2 (g) ° 2H 2 O(g) 4Li(s) + O 2 (g) ° 2Li 2 O(s) Both of these are as one would expect.
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