List of top Chemistry Questions on coordination compounds asked in JEE Main

Out of the following which has maximum CFSE? ( consider with sign)

Find the spin magnetic moment ratio for complexes \([Cr(Cn)_{6}]^{-3}\) & \([Cr(H_{2}O)_{6}]^{+3}\)

Which of the following can be represented as a meridional isomer?
The number of bent-shaped molecule(s) from the following is_______? 
SO2, O3, I3-, N3-
Total spin only magnetic moment of the ion [Mn(SCN)6]x– is 5.92 B.M. Find out the value of x.
How many of the following metal ions have similar value of spin only magnetic moment in gaseous state? (Given: Atomic number: $V, 23; Cr, 24; Fe, 26; Ni, 28$) $V ^{3+} \cdot Ci ^{3+} \cdot Fe ^{2+} \cdot Ni ^{3+}$
The octahedral diamagnetic low spin complex among the following is
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R 
Assertion: Magnetic moment of [Fe(H2O)6]3+ is 5.92 BM and that of [Fe(CN)6]3– is 1.73 BM 
Reason: Oxidation state of Fe in both the complexes is +3. 
In the light of the above statements, choose the correct answer from the options given below

Calculate mass of Tollen’s Reagent Required?

Number of ambidentate ligands in given complex [M(en)(SCN)4] : 

Given below are two statement: one is labelled as Assertion (A) and the other is labelled as Reason (R). 
\(A ⇒\) Spin only magnetic moment of \([Fe(CN)_6]^{–3}\) is \(1.73\) B.M. and \([Fe(H_2O)_6]^{+3}\) is \(5.92\) B.M. 
\(R ⇒\) In both cases Fe have \(+3\) oxidation state. 
In the light of the above statements, write the detailed answer:
Formation of which complex, among the following, is not a confirmatory test of Pb2+ ions
Which of the following complex has a possibility to exist as meridional isomer?
The complex that dissolves in water is:
Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: [CoCl(NH3)]2– absorbs at lower wavelength of light with respect to [Co(NH3)5(H2O) 3–
Reason R: It is because the wavelength of the light absorbed depends on the oxidation state of the metal ion.
In the light of the above statements, choose the correct answer from the options given below:
Correct order of spin only magnetic moment of the following complex ions is:
(Given At.no. Fe: 26, Co:27)
The denticity of the ligand present in the Fehling's reagent is ____ .
Match List-I with List-II
 List-I
(Complex)		 List-II
(Hybridization)
A.Ni(CO)4I.sp3
B.[Ni(CN)4]2-II.sp3d2
C.[Co(CN)6]3-III.d2sp3
D.[CoF6]3-IV.dsp2
Choose the correct answer from the options given below:
[Fe(CN)6]3– should be an inner orbital complex. Ignoring the pairing energy, the value of crystal field stabilization energy for this complex is (–) _____ Δ0. (Nearest integer)
Octahedral complexes of copper(II) undergo structural distortion (Jahn-Teller). Which one of the given copper(II) complexes will show the maximum structural distortion?
(en – ethylenediamine;H2N−CH2−CH2−NH2)
White precipitate of \(AgCl\) dissolves in aqueous ammonia solution due to formation of:

Consider the following metal complexes:
[Co(NH3)6]3+
[CoCl(NH3)5]2+
[Co(CN)6]3–
[Co(NH3)5(H2O)]3+
The spin-only magnetic moment value of the complex that absorbs light with shortest wavelength is _______ B.M. (Nearest integer)

Which of the following will have maximum stabilization due to crystal field?
Match List-I with List-II
List-I (Compound)List-II (Shape)
(A) \(BrF_5\)(I) bent
(B) \([CrF_6]^{3–}\)(II) square pyramidal
(C) \(O_3\)(III) trigonal bipyramidal
(D) \(PCI_5\)(IV) octahedral
Choose the correct answer from the options given below :
Given two statements below:
Statement I : In \(Cl_2\) molecule the covalent radius is double of the atomic radius of chlorine.
Statement II : Radius of anionic species is always greater than their parent atomic radius.
Choose the most appropriate answer from options given below: