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Q.
In Periodic Table, the basic character of oxides
WBJEEWBJEE 2010Classification of Elements and Periodicity in Properties
Solution:
On moving along a period, the tendency to lose electrons decreases and thus, the metallic character decreases. Since, the oxides of non-metals are acidic. Thus, it can be said, along a period from left to right basic character decreases while on moving downward, basic character increases due to increase in metallic character.