Which of the following complex compound(s) is/are paramagnetic and low spin?

(a) K3Fe(CN)6                       (b) Ni(CO)40

(c) Cr(NH3)63+                       (d) Mn(CN)64-

Choose the correct code :

(a) I only       (b) II and III        (c) I and IV       (d) IV only 

 

Concept Videos :-

#23 | VBT & CFT: I
#24 | VBT & CFT: II
#25 | VBT & CFT: III
#26 | Colour of Coordination Compounds

Concept Questions :-

VBT & CFT, Limitation /Hybridisation

(c) Fe3+ in Fe(CN)62- 

 low spin complex μ=1.732 BM

Ni in Ni(CO)4    μ=0

 

Cr3+ in Cr(NH3)63+ 

 low and high spin complex is applicable for d4 to d7 configuration

Mn2+ in Mn(CN)64-  

 

Difficulty Level:

  • 16%
  • 27%
  • 49%
  • 10%