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 )

Correct answer: C. (C) and (E) only A. size order T >In>Al>Ga>B B. Electronegativity order B>Al So, only C, E statements are correct.

JEE Main 20245 AprilEvening Shift

JEE Main 2024 · 5 April · Evening Shift · Chemistry · p Block Elements (Group 13 & 14)

The correct statements from the following are : (A) The decreasing...

The correct statements from the following are : (A) The decreasing order of atomic radii of group 13 elements is (\mathrm{Tl} \gt

) In (\gt

\mathrm{Ga} \gt \mathrm{Al} \gt \mathrm{B}

). (B) Down the group 13 electronegativity decreases from top to bottom. (C) (\mathrm{Al}

) dissolves in dil. (\mathrm{HCl}

) and liberates (\mathrm{H}}_{2}) but conc. (\mathrm{HNO}

}_{3}) renders (\mathrm{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 (\mathrm{Al}

) in (\left[\mathrm{Al}\left(\mathrm{H}

}_{2}

\mathrm{O}\right)_

6\right]^{3+}) ion is (\mathrm{sp}^

\mathrm{ d}^

2). Choose the correct answer from the options given below :

C. (C) and (E) only

A. size order

\mathrm{T} \ell>\mathrm{In}>\mathrm{Al}>\mathrm{Ga}>\mathrm{B}

B. Electronegativity order

\mathrm{B}>\mathrm{Al} < \mathrm{Ga} < \mathrm{In} < \mathrm{T} \ell

\mathrm{B}, \mathrm{Al}

are more stable in +3 oxidation state
So, only C, E statements are correct.