Answers

2016-02-24T17:09:45+05:30
The non metallic character decreases down the group.And we know the oxides of non-metal r acidic in genral.Hence acidic character of oxides decreases down d group.
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2016-02-24T17:43:49+05:30
 Down the group the size of the element increases, electronegativity decreases ,metallic character increases and hence the acidic character decrease.
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