JEE Main 2024 Chemistry 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 liberate H but conc. HNO 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(HO)] ion is spd. Choose the correct answer from the options given below:
Answer: (A)
Solution
(A) is false (Ga < Al in size) and (B) is false (electronegativity is
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