The correct statement among I to III regarding group 13 element oxide are , 

I. Boron trioxide is acidic.

II. Oxides of aluminium and gallium are amphoteric.

III. Oxides of indium and thallium are basic .

  • Option 1)

    I and II only

  • Option 2)

    I , II and III

  • Option 3)

    I and III only

  • Option 4)

    II and III only 

Answers (1)

 

Oxides of boron family -

Acidity decreases and basicity increases down the group

General formula: M2O3

- wherein

Aluminium oxide is amphoteric

 

 

 

 

 

I.  B_{2}O_{3}   is acidic oxide in nature .

II.  Al_{2}O_{3}\:\:and\:\:Ga_{2}O_{3}  are amphoteric oxides.

III. Tl_{2}O_{3}\:\:and\:\:In_{2}O_{3}   are basic oxides.

All statements are correct.


Option 1)

I and II only

Option 2)

I , II and III

Option 3)

I and III only

Option 4)

II and III only 

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