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Oxidation States of Lanthanides

Which of the ...

Question

Which of the following group 13 elements oxide is acidic in nature?

A

Tl₂O₃

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B

Al₂O₃

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C

B₂O₃

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D

Ga₂O₃

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Solution

The correct option is C
B₂O₃

Only Boron forms acidic oxide among group 13 elements. Acidic nature decreases down the group.

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