Which of the following elements does not exist in aqueous medium, as species like tetrahedral [M( OH )4]-and octahedral [M( H 2 O )6]3+ ?

Question

Which of the following elements does not exist in aqueous medium, as species like tetrahedral [M( OH )4]-and octahedral [M( H 2 O )6]3+ ? (A) Boron (B) Thallium (C) Gallium (D) Indium

Tardigrade Admin · Accepted Answer

Species like tetrahedral [M( OH )4]-and octahedral [M( H 2 O )6]3+ does not exist in case of boron due to non-availability of d orbitals for expanding its covalency.

Q. Which of the following elements does not exist in aqueous medium, as species like tetrahedral $[M (O H)_{4}]^{-}$ and octahedral $[M (H_{2} O)_{6}]^{3 +}$ ?

Boron

Thallium

Gallium

Indium

Species like tetrahedral $[M (O H)_{4}]^{-}$ and octahedral $[M (H_{2} O)_{6}]^{3 +}$ does not exist in case of boron due to non-availability of $d$ orbitals for expanding its covalency.

Q. Which of the following elements does not exist in aqueous medium, as species like tetrahedral [M(OH)4​]−and octahedral [M(H2​O)6​]3+ ?