Give the correct of initial T or F for following statements. Use T is statement is true and F if it is false

(I) Co(III) is stabilised in presence of weak ligands , while Co(II) is stabilised in presence of strong field ligand.

(II) Four coordinated complexes of Pd(II) and Pt(II) are diamagnetic and square planar.

(III) $\left[\mathrm{Ni}\right(\mathrm{CN}{)}_4{]}^{4-}$ ion and $\left[\mathrm{Ni}\right(\mathrm{CO}{)}_4]$ are diamagnetic tetrahedral and square planar.

(IV) ${\mathrm{Ni}}^{2+}$ ion does not form inner orbital octahedral complexes.

(1) TFTF                                   

(2) TTTF

(3) TTFT                                   

(4) FTFT

Match List-I with List-II and select the correct answer using the codes given below :

                      List-I                                              List-II

(I) $[{\mathrm{FeF}}_6{]}^{3-}$                                                   (A) 1.73 BM

(II) $\left[\mathrm{Ti}\right({\mathrm{H}}_2\mathrm{O}{)}_6{]}^{3+}$                                             (B) 5.93 BM

(III) $\left[\mathrm{Cr}\right({\mathrm{NH}}_3{)}_6{]}^{3+}$                                            (C) 0.00 BM

(IV) $\left[\mathrm{Ni}\right({\mathrm{H}}_2\mathrm{O}{)}_6{]}^{2+}$                                             (D) 2.83 BM

(V)  $\left[\mathrm{Fe}\right(\mathrm{CN}{)}_6{]}^{4-}$                                               (E) 3.88 BM

          (I)    (II)   (III)   (IV)   (V)                       (I)    (II)   (III)   (IV)   (V) 

(a)      B      A       C       D      E                  (b)    B      A       E       D      C

(c)       B     C       D       E      A                 (d)     D     E       A       B       C  

Set of d-orbitals which is used by central metal during formation of ${\mathrm{MnO}}_4^{-}$?

(1) ${\mathrm{d}}_{{\mathrm{x}}^2-{\mathrm{y}}^2<mspace\; width="1em"></mspace>},{\mathrm{d}}_{{\mathrm{z}}^{2<mspace\; width="1em"></mspace>}},{\mathrm{d}}_{\mathrm{xy}}$                   

(2) ${\mathrm{d}}_{\mathrm{xy}}<mspace\; width="1em"></mspace>,<mspace\; width="1em"></mspace>{\mathrm{d}}_{\mathrm{yz}}<mspace\; width="1em"></mspace>,<mspace\; width="1em"></mspace>{\mathrm{d}}_{\mathrm{xz}}$

(3) ${\mathrm{d}}_{{\mathrm{x}}^2-{\mathrm{y}}^2}<mspace\; width="1em"></mspace>,<mspace\; width="1em"></mspace>{\mathrm{d}}_{\mathrm{xy}}<mspace\; width="1em"></mspace>,<mspace\; width="1em"></mspace>{\mathrm{d}}_{\mathrm{xz}}$                   

(4) ${\mathrm{d}}_{{\mathrm{x}}^2-{\mathrm{y}}^2}<mspace\; width="1em"></mspace>,<mspace\; width="1em"></mspace>{\mathrm{d}}_{z^2}<mspace\; width="1em"></mspace>,<mspace\; width="1em"></mspace>{\mathrm{d}}_{\mathrm{xz}}$

${\mathrm{FeSO}}_4$ is a very good absorber for NO, the new compound formed by this process is found to contain number of unpaired electrons:

(1) 4         

(2) 5           

(3) 3         

(4) 6

$\mathrm{A}\left[\mathrm{M}\right({\mathrm{H}}_2\mathrm{O}{)}_6{]}^{2+}$ complex typically absorbs at around 600 nm. It is allowed to react with ammonia to form a new complex $\left[\mathrm{M}\right({\mathrm{NH}}_3{)}_6{]}^{2+}$ that should have absorption at :

(1) 800 nm         (2) 580 nm       (3) 620 nm      (4)  320 nm

Which of the following order of CFSE is incorrect?

$\left(\mathrm{a}\right)<mspace\; width="1em"></mspace>\left[\mathrm{Co}\right(\mathrm{en}{)}_3{]}^{3+<mspace\; width="1em"></mspace>}>\left[\mathrm{Co}\right({\mathrm{NH}}_3{)}_6{]}^{3+}>\left[\mathrm{Co}\right({\mathrm{H}}_2\mathrm{O}{)}_6{]}^{3+}$

(b) $[{\mathrm{PtCl}}_4{]}^{2-}>[{\mathrm{PdCl}}_4{]}^{2-}>[{\mathrm{NiCl}}_4{]}^{2-}$

(c) $\left[\mathrm{Ni}\right(\mathrm{dmgH}{)}_2]<[\mathrm{Ni}(\mathrm{en}{)}_2{]}^{2+}$

(d) $\left[\mathrm{Co}\right(\mathrm{ox}{)}_3{]}^{3-}<\left[\mathrm{Co}\right(\mathrm{en}{)}_3{]}^{3+}$

For which of the following ${\mathrm{d}}^{\mathrm{n}}$ configuration of octahedral complexes, can not exist in both high spin and slow spin forms:

(I) ${\mathrm{d}}^3$                  (II) ${\mathrm{d}}^5$               (III) ${\mathrm{d}}^6$             (IV) ${\mathrm{d}}^8$

(1) I,II and III                                 

(2) II,III & IV

(3) I & IV                                         

(4) None of these

Consider the complex $\left[\mathrm{Co}\right({\mathrm{NH}}_3{)}_4{\mathrm{CO}}_3]{\mathrm{ClO}}_4$ , in which coordination number, oxidation number and number of d-electrons on the metal are respectively.

(1) 6,3,6       

(2) 6,2,7     

(3) 5,3,6     

(4) 5,3,7

The $\mathrm{\pi }$-ligand which uses its d-orbital during synergic bonding in its complex compound.

(1) ${\mathrm{CN}}^{-}$   

(2) ${\mathrm{PR}}_3$     

(3) $\mathrm{NO}$     

(4) ${\mathrm{N}}_2$

The IR stretchin frequencies of free CO, and CO in $\left[\mathrm{V}\right(\mathrm{CO}{)}_6{]}^{-}<mspace\; width="1em"></mspace>,<mspace\; width="1em"></mspace>\left[\mathrm{Cr}\right(\mathrm{CO}{)}_6{]}^{}<mspace\; width="1em"></mspace>\mathrm{and}<mspace\; width="1em"></mspace>\left[\mathrm{Mn}\right(\mathrm{CO}{)}_6{]}^{+}$ are 2143 ${\mathrm{cm}}^{-1}$, 1860 ${\mathrm{cm}}^{-1}$,2000 ${\mathrm{cm}}^{-1}$ and 2090 ${\mathrm{cm}}^{-1}$, respectively. Then correct statement about metal carbonyls is :

(1) 'C-O' bond is strongest in the cation and weakest in the anion.

(2) 'C-O' bond is weakest in the cation and strongest in the anion.

(3) 'C-O' bond is longer in the cation than in the anion.

(4) 'M-C' pi bonding is higher in the cation.