Coordination Compounds Important MCQs for NEET 2026

Coordination Compounds – NEET 2026 Practice MCQs

Which of the following has longest C–O bond length? (Free C–O bond length in CO is 1.128 Å.)
[Fe(CO)4]2−
[Mn(CO)6]+
Ni(CO)4
[Co(CO)4]−
Out of the following complex compounds, which of the compound will be having the minimum conductance solution?
[Co(NH3)6]Cl3
[Co(NH3)5Cl]Cl
[Co(NH3)3Cl3]
[Co(NH3)4Cl2]
The complex, [Pt(Py)(NH3)BrCl] will have how many geometrical isomers?
3
4
0
2
Type of isomerism exhibited by compounds [Cr(H2O)6]Cl3, [Cr(H2O)5Cl]Cl2·H2O and the value of coordination number (CN) of central metal ion in all these compounds, respectively is :
Geometrical isomerism, CN = 2
Optical isomerism, CN = 4
Ionisation isomerism, CN = 4
Solvate isomerism, CN = 6
Which of the following is not an ambidentate ligand?
C2O42−
SCN−
NO2−
CN−
Ethylene diamine tetraacetate ion is a/an:
hexadentate ligand
ambidentate ligand
monodentate ligand
bidentate ligand
An excess of AgNO3 is added to 100 mL of a 0.01 M solution of dichlorotetraaquachromium (III) chloride. The number of moles of AgCl precipitated would be
0.003
0.01
0.001
0.002
The calculated spin only magnetic moment of Cr2+ ion is?
4.90 BM
5.92 BM
2.84 BM
3.87 BM
Select the element (M) whose trihalides cannot be hydrolysed to produce an ion of the form [M(H2O)6]3+
Ga
In
Al
B
Number of possible isomers for the complex [Co(en)2Cl2]Cl will be (en = ethylenediamine)
1
3
4
2
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