basic character

which is most basic among the following?

MgO
Na2O
CaO
Al2O3

how u will decide,,,,,,,,,,,,xplain me......

the maximum number of hydrogen bondsthat can be formed by a molecule of water-----------

5 Answers

second one is 4

In metal oxides i think more electropos. the metal more the basic it is.. Hence Na₂O should be the ans,.

ans Na2O

b'coz in aqueous soln it form strong base

Na2O + H2O ==== 2NaOH

thanks dharun

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