A magnetic moment of 1.73 BM will be shown by one among the following
[A] [Cu(NH3 ) 4]2+
[B] [Ni(CN) 4]2-
Which of the following complexes is used to be as an anticancer agent
[A] Mer- [Co(NH3)3Cl3]
Among the following complexes, the one which shows zero crystal field stabilasation energy(CFSE) is
The name of complex ion [Fe(CN6)]3- is
[A] hexacyanoiron(III) ion
[B] (C) tricyanoferrate(III) ion
[C] (B) hexacyanitoferrate(III) ion
[D] hexacyanidoferrate(III) ion
The sum of coordination number and oxidation number of the metal M in the complex [M(en)2(C2O4) Cl(Where, en is ethylenediamine) is
The hybridisation involved in complex [Ni(CN) 4]2- is(Atomic number of Ni=
[B] (C) d2sp2
[C] (D) d2sp3
[D] (B) sp3
Number of possible isomers for the complex [Co(en) 2Cl will be(en ethylendiamine)
Which of these statements about [Co(CN)]3-is true ?
[A] [Co(CN)6]3-has no unpaired electrons and will be in a low-spin configuration.
[B] [Co(CN)6]3-has four unpaired electrons and will be in a low-spin configuration.
[C] [Co(CN)6]3-has four unpaired electrons and will be in a low -spin configuration
[D] [Co(CN)6]3-has no unpaired electrons and will be in high -spin configuration.
Cobalt(III) chloride forms several octahedral complexes with ammonia. Which of the following will not give test for chloride ions with silver nitrate at 25&8451; ?
John-Teller effects is not observed in high spin complexes of
The correct increasing order of trans-effect of the following species is
[A] NH 3 >CN= >Br- >C6 H5–
[B] CN– >C6 H5 – >Br- NH3
[C] Br– CN – NH3 C6 H5 –
[D] CN – >Br – >C6H 5>NH3
Which of the following pairs of d-orbitals will have electron density along the axis ?
[A] d z2 ,d xz
[B] dxz , dyz
[C] d2, d
[D] d xy , d x2-y2
Which of the following has longest C-O bond length?(Free C-O bond length in CO is 1.128A.)
[A] [Co(CO) 4] –
[B] [Fe(CO) 4] 2-
[C] [Mn(CO) 6] +
[D] Ni(CO) 4
Pick out the correct statement with respect to [Mn(CN) 6]3+
[A] It is sp3d2 hybridised and octahedral 6
[B] It is sp3d2 hybridised and tetrahedral
[C] It is d2sp3hybridised and octahedral
[D] It is dsp2hybridised and square planar
Correct increasing order for the wavelengths of absorption in the visible region for the complexes of CO3+ is
[A] [Co(en) 3] 3+ ,[Co(NH3 ) 6] 3+ [Co(H 2O 6)] 3+
[B] [Co(H2O) 6] 3+ ,[CO(en3)] 3+, [Co(NH3 ) 6] 3+
[C] [Co(H2O6)3] 3+ ,[Co(NH 3) 3+], [Co(NH3)6] 3+
[D] [Co(NH3)6] 3+ ,[Co(en3) 3+], [Co(H2O) 6] 3+