Group 13 Elements: The Boron Family — Prelims Questions

Which of the following statements regarding the inert pair effect in Group 13 elements is INCORRECT?

The correct order of Lewis acid strength for boron trihalides is:

Which of the following statements about Diborane ($B_2H_6$) is correct?

Which of the following statements correctly describes the nature of Boric acid ($H_3BO_3$)?

Which of the following compounds is amphoteric?

The atomic radius of Gallium (Ga) is slightly less than that of Aluminium (Al) despite being below Al in Group 13. The primary reason for this anomaly is: