19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following complex ions, which is diamagnetic in nature? [CBSE AIPMT 2008]
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]
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–
The number of possible isomers of an octahedral complex [Co(C2O4)2 (NH3)2]– is [AIIMS2006]
The pair in which both species have same magnetic moment (spin only value) is [AIIMS 2006]
[Cr(H2O)6]Cl3 (at. no. of Cr = 24) has a magnetic moment of 3.83 BM, the correct distribution of 3d- electrons in the chromium of the complex is [CBSE AIPMT 2006] (a) xz x -y , x 3d 3d ,3d (b) xy x -y , 3d ,3d 3d , yz…
The geometry of Ni(CO)4 and Ni(PPh3)2Cl2 are [Manipal 2006]
How many ions are produced from [Co(NH3)6]Cl3 in solution?
Which complex cannot ionise in solution?
In the complex ion [Co(NH3)6]3+, the NH3 molecules are linked to the central metal ion by
Which compound is formed when excess of KCN is added to aqueous solution of copper sulphate?
The complex ion which has no d electrons in the central metal atom is
What is the structural formula of lithium tetra- hydridoaluminate?
Show the coordination number of the metal ion in complex K4[Fe(CN)6].
The coordination number of Ag in [Ag(NH3)2]Cl is
The coordination number of Fe in K4[Fe(CN)6] is
What is the coordination number of cobalt in [Co(NH3)6]Cl3?
In the complex ion [Fe(H2O)5NO]2+
The oxidation number of Fe in K3[Fe(CN)5NO] is (assume NO as a neutral)
A ligand can also be regarded as
The oxidation number of Co in [Co(en)3]2(SO4)3 is
The oxidation number of Cr in [Cr(C6H6)2] is
For the chemical reaction: (NEET 2019) N g H g NH g The correct option is: (a) d N d NH dt dt (b) d N d NH dt dt (c) d H d NH dt dt (d) d H d NH dt dt