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 b

Question

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 $H_{2}$ but conc. $HNO_{3}$ 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 $[Al (H_{2} O)_{6}]^{3 +}$ ion is $sp^{3} d^{2}$ . Choose the correct answer from the options given below :

Options:

Answer:

C

Solution:

A. size order $T ℓ > In > Al > Ga > B$ B. Electronegativity order $B > Al < Ga < In < T ℓ$ D. $B, Al$ are more stable in +3 oxidation state
So, only C, E statements are correct.

TestHub · Accepted Answer

A. size order T ℓ > In > Al > Ga > B B. Electronegativity order B > Al < Ga < In < T ℓ D. B , Al are more stable in +3 oxidation state So, only C, E statements are correct.

Chemistry - Complete Pblock- Question with Solution | TestHub

Options:

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