The complex ion having minimum wavelength of absorption in the visible region is

Question

The complex ion having minimum wavelength of absorption in the visible region is (A) [ Co ( NH 3)6]3+ (B) [ CoCl ( NH 3)5]2+ (C) C is -[ CoCl 2( NH 3)4]+ (D) Trans -[ CoCl 2( NH 3)4]+

Tardigrade Admin · Accepted Answer

Here [ Co ( NH 3)6]3+ have minimum wavelength of absorption in the visible region as for it splitting energy is more as it has all strong ligands. Δ0 (splitting energy) propto (1/λ( text Absorbed )) Basic strength of ligand C > N > O > X (halogen) donor.

Q. The complex ion having minimum wavelength of absorption in the visible region is

$[C o (N H_{3})_{6}]^{3 +}$

$[C o Cl (N H_{3})_{5}]^{2 +}$

C is $- [C o C l_{2} (N H_{3})_{4}]^{+}$

Trans $- [C o C l_{2} (N H_{3})_{4}]^{+}$

Here $[C o (N H_{3})_{6}]^{3 +}$ have minimum wavelength of absorption in the visible region as for it splitting energy is more as it has all strong ligands. $Δ_{0}$ (splitting energy) $\propto \frac{1}{λ ( Absorbed )}$ Basic strength of ligand $C > N > O > X$ (halogen) donor.

Q. The complex ion having minimum wavelength of absorption in the visible region is

[Co(NH3​)6​]3+

[CoCl(NH3​)5​]2+

C is −[CoCl2​(NH3​)4​]+

Trans −[CoCl2​(NH3​)4​]+

Here [Co(NH3​)6​]3+ have minimum wavelength of absorption in the visible region as for it splitting energy is more as it has all strong ligands. Δ0​ (splitting energy) ∝λ( Absorbed )1​ Basic strength of ligand C>N>O>X (halogen) donor.

$[C o (N H_{3})_{6}]^{3 +}$

$[C o Cl (N H_{3})_{5}]^{2 +}$

C is $- [C o C l_{2} (N H_{3})_{4}]^{+}$

Trans $- [C o C l_{2} (N H_{3})_{4}]^{+}$

Here $[C o (N H_{3})_{6}]^{3 +}$ have minimum wavelength of absorption in the visible region as for it splitting energy is more as it has all strong ligands. $Δ_{0}$ (splitting energy) $\propto \frac{1}{λ ( Absorbed )}$ Basic strength of ligand $C > N > O > X$ (halogen) donor.