A. size order Tℓ>In>Al>Ga>B B. Electronegativity order B>Al<Ga<In<Tℓ D. B,Al are more stable in +3 oxidation state
So, only C, E statements are correct.
The correct statements from the following are : (A) The decreasing order of atomic radii of group 13 elements is Tl> In >Ga>Al>B. (B) Down the group 13 electronegativity decreases from top to bottom. (C) Al dissolves in dil. HCl and liberates H2 but conc. HNO3 renders Al passive by forming a protective oxide layer on the surface. (D) All elements of group 13 exhibits highly stable +1 oxidation state. (E) Hybridisation of Al in [Al(H2O)6]3+ ion is sp3 d2. Choose the correct answer from the options given below :
Held on 5 Apr 2024 · Verified 6 Jul 2026.
(A), (C) and (E) only
(A) and (C) only
(C) and (E) only
(A), (B), (C) and (E) only
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