Group 13 elements show +1 and +3 oxidation states. Relative statibility of +3 oxidation may be given as

Options

A. `TI^(+) gt In^(3+) gt Ga^(3+) gt AI^(3+) gt B^(3+)`
B. `B^(3+) gt AI^(3+) gt Ga^(3+) gt In^(3+) gt TI^(3+)`
C. `AI^(3+) gt Ga^(3+) gt TI^(3+) gt In^(3+) gt B^(3+)`
D. `AI^(3+) gt B^(3+) gt Ga^(3+) gt TI^(3+) gt In^(3+)`

Answer

B

Explanation

Stability of +3 oxidation state decreases from AI to TI. B always shows +3 oxidation between state in all of its compounds.