Arrange the following complex in increadsing order of stretching vibrational frequency of C-O bond :
`(P) [(PPh_(3))_(3)Mo(CO)_(3)]" "(Q) [(Ph_(2)PCl)_(3)Mo(CO)_(3)]`
`(R )[(PhPCl_(2))_(3)Mo(CO)_(3)]" "(S) [(PCl_(3))_(3)Mo(CO)_(3)]`

Select the correct order of C-O bond order in mixed phosphine carbony1 complex (I) [Mo(Ph_(3)P)_(3)(CO)_(3)] (II) [Mn(Ph_(2)PCI_(3))(CO)_(3)] (III) [Mo(PhCI_(2))_(3)(CO)_(3)] .

The oxidation state of chromium is [Cr(PPh_(3))_(3)(CO)_(3)] is

Arrange the following complexes in order of increasing electrical conductivity . [Co(NH3)3Cl3], [Co(NH3)4 Cl2] Cl, [Co(NH3)6]Cl3 , [Co(NH3)5Cl]Cl2

The correct order of triangle_(0) for the given complexes, would be : (P) [CoF_(6)]^(3-)" "(Q) [Co(H_(2)O)_(6)]^(3+) (R) [Co(NH_(3))_(6)]^(3+)" "(S) [Rh(NH_(3))_(6)]^(3+)

If in the mixed carbonyl the other ligand is also pi acceptor it would compete with the ligand CO for gaining the metal d_(pi) electron charge The higher is the extent of back donation in CO , the lesser will be the stretching vibration frequency for C-O bond If PP_(3) is better pi-acceptor than CO then answer the following Select the correct order of C-O bond length in the following molecules . (I) [Mo(CO)_(3)(PF_(3))_(3)] (II) [Mo(CO)_(3)(PCI_(3))_(3)] (III) [Mo(CO)_(3)(P(Me)_(3)_(3)] (a) IgtIIgtIII (b) IIIgtIgtII (c) IIgtIIIgtI (d) IltIIltIII