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Which one of the following metallic oxid...

Which one of the following metallic oxides exhibits amphoteric nature?

A

CaO

B

`Na_2O`

C

`BaO`

D

`Al_2O_3`

Text Solution

Verified by Experts

The correct Answer is:
D
On moving across the third period acidic character increases so `Na_(2) O` is strongly basic, `Al_(2)O_(3)`.is anphoteric in nature. If we go down in a group (II) the basic character of the oxides increases or acidic character decreases. Hence, CaO and BaO are basic in n nature.
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