First slide

13th group or boron group

Question

Which one of the following is correct statement?

Moderate

A

The hydroxides ofAl is more acidic than that of B.
B

The hydroxides of B is basic while that of Al is amphoteric.
C

The hydroxide of B is acidic, while that of Al is amphoteric.
D

The hydroxides of B and Al are amphoteric.

Solution

The basic nature of the hydroxides increases progressively down the group. It is because the metallic character increases down the group.
Hence the hydroxide of ‘B’ is acidic and ‘Al’ is amphoteric.

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