19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The number of possible isomers of an octahedral complex [Co(C2O4)2 (NH3)2]– is [AIIMS2006]
Among the following, the species having square planar geometry for central atom are [AIIMS2006] (i) XeF4 (ii) SF4 (iii) [NiCl4] 2– (iv) [PtCl4] 2–
In which of the following coordination entities the magnitude of o (CFSE in octahedral field) will be maximum? (At. no. Co = 27) [CBSE AIPMT2007]
Which of the following will give a pair of enantiomorphs? (en = NH2CH2CH2NH2) [CBSE AIPMT 2007]
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 complex ions, which is diamagnetic in nature? [CBSE AIPMT 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 0.1 M complex compound solutions will have the minimum electrical conductivity? [Guj. CET 2010]
AgCl is dissolved in excess of each of NH3, KCN and Na2S2O3. The complex ions produced in each case are (AMU 2010)
How many electrons are present in 3d orbital of tetrahedral K2[NiCl4] complex? [Guj. CET 2008]
What is the correct electronic configuration of the central atom in K4[Fe(CN)6] based on crystal field theory? (NEET UG 2019)
The complexes [Co(NH3)6][Cr(CN)6] and [Cr(NH3)6] [Co(CN)6] are the examples of which type if isomerism? [CBSE AIPMT 2011]
Which of the following complex ion is expected to absorb visible light? [CBSE AIPMT 2009]
An example of a sigma bonded organometallic compound is (NEET 2017)
Which of the following coordination entities should be expected to absorb light of lowest frequency?[AIIMS2009]
Number of possible isomers for the complex [Co(en)2Cl2] Cl will be (en = ethylenediamine) (AIPMT 2015)
Iron carbonyl, Fe(CO)5 is (NEET 2018)
Which of the following has longest C-O bond length? (Free C-O bond length is CO is 1.128Å.) (NEET 2016)
Assertion: CO and CN are referred as acid ligands. Reasaon: In CO and CN vacant type orbitals are present. [AIIMS 2009]
The complex, [Pt(Py)(NH3)BrCl] will have how many geometrical isomers? [CBSE AIPMT 2011]
Jahn-Teller effect is not observed in high spin complexes of (NEET 2016)
Which of the following is the correct order of increasing field strength of ligands to form coordination compounds? (NEET 2020)
Which of the following species contains equal number of -and -bonds? (AIPMT 2015)
Which one of the following ions exhibits d-d transition and paramagnetism as well? (NEET 2018) (a) 2- Cr O (b) - MnO (c) 2- CrO (d) 2- MnO
The IUPAC name for [Al(OH)(H2O)5]2+ is