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- Engineering
- Please help! - p- d- and f-block elements - BITSAT
- #p- d- and f-block elements
- #Birla Institute of Technology & Science Admission Test
- #Engineering
- #Chemistry
- Option 1)
Acidic
- Option 2)
basic
- Option 3)
Amphoteric
- Option 4)
All of these
Answers (1)
As we learnt in
Hydroxides of boron family -
General formula:
Acidity decreases, basicity increases down the group
- wherein
Aluminium hydroxide is amphoteric
Oxides of boron family -
Acidity decreases and basicity increases down the group
General formula: M2O3
- wherein
Aluminium oxide is amphoteric
In the oxide and hydroxides of the Boron family, the acidity decreases and basicity increases down the group. Aluminium being right below Boron has amphoteric oxide and hydroxide.
Option 1)
Acidic
This answer is incorrect
Option 2)
basic
This answer is incorrect
Option 3)
Amphoteric
This answer is correct
Option 4)
All of these
This answer is incorrect
View full answer
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