Coordination Co...

Among the following complexes (K-P) :
$$K_3[Fe(CN_6]-K  $$ and $$  [Co(NH_3)_6]Cl_3-L$$ ; 
$$Na_3[Co(oxalate)_3]-M $$ and    $$  [Ni(H_2O)_6]Cl_2-N$$ ;
$$K_2[Pt(CN)_4]-O$$ and $$[Zn(H_2O)_6](NO_3)_2 - P$$;
the diamagnetic complexes are:

Three arrangements are shown for the complex, $$[Co(en)(NH_3)_2Br_2]^+$$. Which one is the wrong statement?

Copper sulphate dissolves in ammonia due to the formation of:

Which one of the following has largest number of isomers?
(R = alkyl group,en = ethylenediamine)

Both geometrical and optical isomerism are shown by:

Which of the following statements is true about hybridisation?

According to Werner's coordination theory, there are _______ kinds of valency, _______ and ______. The primary valency of a central metal ion is satisfied with ________.

The compounds $$[Co(SO_4) (NH_3)_5]Br$$ and $$ [Co(SO_4)(NH_3)_5]Cl$$ represent:

Which of the following pairs of isomers is not correctly matched with its type of isomerism?

Match the column I with column II and mark the appropriate choice.