Deduce the magnetic behaviour of each of the following:
 (i) [Cr(NH₃ )₅Cl]²⁺
(ii) Fe(CO)₅ [At. No. Cr = 24, Fe = 26]

Using valence bond theory predict the geometry and magnetic behaviour of [Cr(NH₃)₆]³⁺ ion [Cr = 24].

Write IUPAC name of [Pt(NH₃)₂Cl₂].

Using valence bond theory, predict the shape and magnetic character of [Ni(CO)₄] [Ni = 28].

Give one example of application of coordination compounds in medicine.

What type of isomerism is exhibited by the following pair:
[Co(NH₃)₅Br]SO₄ and [Co(NH₃)SO₄] Br
Give a chemical test to distinguish them.

Write the formula for potassium tri-oxalato chromate(III).

Give one example of co-ordination compounds useful in biological processes.

209.

Under the valence bond approach explain the shape and magnetic behaviour of [Ni(NH₃)₆]²⁺.[Given At. No. of Ni = 28]

Explain the following:
Cobalt metal complex is pink when it is octahedral [Co(H₂O)₆]²⁺ and it is blue when tetrahedral [CoCl₄]^2–