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Question: Group 13 elements show +1 and +3 oxidation states. Relative stability of +3 oxidation state may be g...

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

A

T13+>In3+>Ga3+>Al3+>B3+T1^{3 +} > In^{3 +} > Ga^{3 +} > Al^{3 +} > B^{3 +}

B

B3+>Al3+>Ga3+>In3+>Tl3+B^{3 +} > Al^{3 +} > Ga^{3 +} > In^{3 +} > Tl^{3 +}

C

Al3+>Ga3+>Tl3+>In3+>B3+Al^{3 +} > Ga^{3 +} > Tl^{3 +} > In^{3 +} > B^{3 +}

D

Al3+>B3+>Ga3+>Tl3+>In3+Al^{3 +} > B^{3 +} > Ga^{3 +} > Tl^{3 +} > In^{3 +}

Answer

B3+>Al3+>Ga3+>In3+>Tl3+B^{3 +} > Al^{3 +} > Ga^{3 +} > In^{3 +} > Tl^{3 +}

Explanation

Solution

: Stability of + 3 oxidation state decreases from Al to Tl. B always shows +3 oxidation state in all of its compounds.