The increasing order of atomic radii of group 13 elements is

Question

The correct statements from the following are:

A) The increasing order of atomic radii of group 13 elements is $B < A l < G a < I n < T l$ .

B) Al dissolves in dil. HCl and liberate $H_{2}$ but conc. $H N O_{3}$ renders Al passive by forming a protective oxide layer on the surface.

C) All elements of group 13 exhibits highly stable +1 oxidation state.

D) Hybridisation of Al in ${[A l {(H_{2} O)}_{6}]}^{3 +}$ ion is $s p^{3} d^{2}$ .

Choose the correct answer from the options given below:

Smart Achievers · Accepted Answer

(1)

(i) $B < G a < A l < I n < T l$ : Atomic radius

(ii) $T l$ : more stable in +1 due to $H N O_{3}$

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