19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
What is the coordination number of cobalt in [Co(NH3)6]Cl3?
In the complex ion [Fe(H2O)5NO]2+
Which of the following complex ion is expected to absorb visible light? [CBSE AIPMT 2009]
How many electrons are present in 3d orbital of tetrahedral K2[NiCl4] complex? [Guj. CET 2008]
Which of the following complexes exhibit the highest paramagnetic behaviour? (where, gly = glycine, en = ethylenediammine and bpy = bipyridyl moities) (At. no : Ti = 22, V = 23, Fe = 26, Co = 27) [CBSE AIPMT 2008]
Which of the following complex ions, which is diamagnetic in nature? [CBSE AIPMT 2008]
The oxidation number of Fe in K3[Fe(CN)5NO] is (assume NO as a neutral)
The oxidation number of Co in [Co(en)3]2(SO4)3 is
The d-electron configuration of Cr 2+, Mn 2+, Fe 2+ and Co 2+ are d 4, d 5, d 6 and d 7 respectively. Which one of the following will exhibit minimum paramagnetic behaviour? [CBSE AIPMT 2007]
Which of the following will give a pair of enantiomorphs? (en = NH2CH2CH2NH2) [CBSE AIPMT 2007]
The oxidation number of Cr in [Cr(C6H6)2] is
What is the oxidation number of Fe in Fe(CO)5?
The charge on the central metal ion in the complex [Ni(CO)4] is
The oxidation states of Cr in [Cr(H2O)6]Cl3, [Cr(C6H6)2] and K2[Cr(CN)2(O)2(O2)(NH3)] respectively are:
The neutral molecules or ions which coordinate with the central atom or ion in a complex ion are called
In which of the following coordination entities the magnitude of o (CFSE in octahedral field) will be maximum? (At. no. Co = 27) [CBSE AIPMT2007]
Among the following, the species having square planar geometry for central atom are [AIIMS2006] (i) XeF4 (ii) SF4 (iii) [NiCl4] 2– (iv) [PtCl4] 2–
A ligand can also be regarded as
Which of the following is a bidentate ligand?
The ligand N(CH2CH2NH2)3 is
Which one of the following is tridentate ligand? (a) - NO
Which of the following is a hexadentate ligand?
[EDTA]4– has coordination number
How many [EDTA]4– molecules are required to make an octahedral complex with a Ca2+ ion?
[Fe(CN)6]3– ion is