Fe2(CO)9 is diamagnetic.Which of the following reasons is correct?
1. Presence of one CO as bridge group
2. Presence of monodentate ligand
3. Metal-metal(Fe-Fe) bond in molecule
4. Resonance hybridization of CO
Difficulty Level:
From the stability constant (hypothetical values)given below, predict which is the strongest ligand?
1. Cu2++4NH3[Cu(NH3)4]2+;(k=4.5x1011)
2. Cu2++4CN[Cu(CN)4]2-;(K=2.0x1027)
3. Cu2++2en[Cu(en)2]2+;(K=3.0x1015)
4. Cu2++4H2O[Cu(H2O)4]2+;(K=9.5x108)
Difficulty Level:
Which does not obey EAN rule?
1. [Cu(NH3)4]2+
2. [Zn(OH)4]2-
3. [HgI4]2-
4. Fe(CO)5
Difficulty Level:
The coordination number and oxidation state of Cr in K3[Cr(C2O4)3] are respectively
1. 3 and +3
2. 3 and 0
3. 6 and +3
4. 4 and +2
Difficulty Level:
Which one of the following octahedral complexes will not show geometrical isomerism?(A and B are monodentate ligands)
1. [MA4B2]
2. [MA5B]
3. [MA2B4]
4. [MA3B3]
Difficulty Level:
According to IUPAC nomenclature sodium nitroprusside is named as
1. sodium pentacyanonitrosyl ferrate(II)
2. sodium pentacyanonitrosyl ferrate(III)
3. sodium nitroferricyanide
4. sodium nitroferrocyanide
Difficulty Level:
Amoung the following which is not the -bonded organomettalic compound?
1. K[PtCl3(-C2H4)]
2. Fe(-C2H5)2
3. Cr(-C6H6)2
4. (CH3)4Sn
Difficulty Level:
IUPAC name of [Pt(NH3)3 (Br)(NO2)Cl]Cl is
1. triamminebromidochloridonitroplatinum(IV)Chloride
2. triamminebromonitrocholoroplatinum(IV)Chloride
3. triamminechlorobromonitroplatinum(IV)Chloride
4. triamminenitrochlorobromoplatinum(IV)Chloride
Difficulty Level:
Which of the following cation does not form an ammine complex with excess of ammonia?
1. Ag+
2. Cu2+
3. Cd2+
4. Na1+
Difficulty Level:
What is the denticity of EDTA ?
1. monodentate
2. hexadentate
3. bidentate
4. tridentate
Difficulty Level: