SATHEE: P-Block Elements Ques 521

P-Block Elements Ques 521

Question: Which of the following statements are correct?

(i) Aluminium forms ${[A l F_{6}]}^{3 -}$ ion while boron forms only ${[B F_{4}]}^{-}$ ion due to presence of d-orbitals in aluminium.

(ii) The first member of a group differs from the heavier members in its ability to form $p π - p π$ multiple bonds to itself and to other second row elements. While heavier member forms $d π - p π$ bonds.

(iii) d-orbitals contribute more to the overall stability of molecules than $p π - p π$ bonding of second row elements.

Options:

A) (i) (ii) (iii)

B) (i) (iii)

C) (i) (ii)

D) (ii) (iii)

Show Answer

Answer:

Correct Answer: C

Solution:

d-orbitals are of higher energy than the p -orbitals, they contribute less to the overall stability of molecules than $p π - p π$ bonding of the second row elements.

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P-Block Elements Ques 521

Question: Which of the following statements are correct?

Options:

Answer:

Solution:

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