Which of the following is incorrect about Tetraaquadithiocyanato-s cobalt(III) tris(oxalato)cobaltate(III)

see full answer

Your Exam Success, Personally Taken Care Of

1:1 expert mentors customize learning to your strength and weaknesses – so you score higher in school , IIT JEE and NEET entrance exams.

An Intiative by Sri Chaitanya

formula of the complex is $[Co {(H_{2} O)}_{4} (SCN)_{2}] [Co {(ox)}_{3}]$

It is a chelating complex and show linkage isomerism.

It shows optical isomerism.

It shows geometrical isomerism.

answer is A.

(Unlock A.I Detailed Solution for FREE)

Best Courses for You

JEE

NEET

Foundation JEE

Foundation NEET

CBSE

Detailed Solution

(1) The formula of the complex Tetra ammine dithio cyanato-s cobalt(III) tris(oxalato)cobaltate (III) is [CoIII(SCN)₂(NH₃)₄]₃[Co III(ox)₃] and not [Co(SCN)₂(NH₃)₄][Co(ox)₃] because to balance the charge, three units of complex cation and one unit of complex anion are present in one formula unit.
Thus option 1 is incorrect.
(2) Linkage isomerism is possible as SCN ligand is ambidentate ligand and has two donor atoms N and S.
Thus option 2 is correct.
(3) The complex ion [Co(ox)₃]³⁻ has elements of asymmetry and is optically active.
Thus option 3 is correct.
(4) The complex cation [Co(SCN)₂(NH₃)₄]⁺¹ shows geometrical isomerism.
Thus option 4is correct.