Module 1 practice assesment

What is the coordination number of chromium in K₃[Cr(C₂O₄)₃]?

• 1

• 2

• 3

• 6

Which is the donor atom in the coordinate bond shown below?

M <-N=O

|

O

• N

• O

• Both

The correct increasing order of splitting power of ligands according to spectrochemical series is

•  Cl^– < OH^– < CN^–

• Cl^– < CN^– < OH^–

• OH^– < Cl^– < CN^–

• OH^– < CN^– < Cl^–

In d7 weak field octahedral complex ---------- unpaired electrons present.  

• 1

• 2

• 3

• 4

In crystal field splitting diagram, for Oh complex ------orbital has higher energy. 

• t2g

• t2

• eg

• e

How many unpaired electrons are present in d6 strong field octahedral complex?  

• 1

• 2

• 0

• 3

The complex with highest magnitude of crystal field splitting energy (Δ0) is---

• [Cr(H₂O)₆]⁺ 

• [Ti(H₂O)₆]³⁺ 

• [Fe(H₂O)₆]³⁺ 

• [Mn(H₂O)₆]³⁺ 

What is CFSE for d4 ion in weak field octahedral complex?

• -6Dq + 0P 

• -12Dq + 1P

• -16Dq + 1P

• -16Dq + 3P

A complex [Co(NH₃)₆]³⁺ appears orange. What color of light does it primarily absorb? (a)  

(a)  

The complexes [Co(NH₃)₆][Cr(C₂O₄)₃] and [Cr(NH₃)₆][Co(C₂O₄)₃] exhibit -----

• Linkage isomerism  

• Geometrical isomerism

• Coordination isomerism

• Ionization isomerism