Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
JEE Advanced 2016Paper 1
Exam
JEE Advanced
Year
2016
Paper
Paper 1
Subject
Chemistry
Chapter
Coordination Compounds

JEE Advanced 2016 · Paper 1 · Chemistry · Coordination Compounds

Among [Ni (CO) _ 4 ], [NiC l _ 4 ] ^ 2 - , [Co (N H _ 3 ) _ 4 C l _...

Among [Ni(CO)4],[NiCl4]2−,[Co(NH3)4Cl2]Cl,Na3[CoF6],Na2O2\left[Ni{\left(CO\right)}_{4}\right], {\left[NiC{l}_{4}\right]}^{2 -}, \left[Co{\left(N{H}_{3}\right)}_{4}C{l}_{2}\right]Cl, N{a}_{3}\left[Co{F}_{6}\right], N{a}_{2}{O}_{2} and Cs{O}_{2}, the total number of paramagnetic compounds is

Options

  1. A22
  2. B33
  3. C44
  4. D55

Correct answer

B. 33

Step-by-step solution

Compound/Ion Unpaired Electron Magnetic nature of compound
1] \left[Ni{\left(CO\right)}_{4}\right]</td><td></td> <td>{\text{3d}}^{10}, {sp}^{3} 00 Diamagnetic</td></tr><tr><td>2]</td><td>[Co(NH3)4Cl2]Cl</td> </tr> <tr> <td>2]</td> <td>\left[Co{\left(N{H}_{3}\right)}_{4}C{l}_{2}\right]Cl 3d6,d2sp33{d}^{6}, {d}^{2}{sp}^{3} 00 Paramagnetic</td></tr><tr><td>3]</td><td></td> </tr> <tr> <td>3]</td> <td>{\left[NiC{l}_{4}\right]}^{2 -}</td><td></td> <td>3{d}^{8}, {sp}^{3}</td><td></td> <td>2</td><td>Diamagnetic</td> <td>Diamagnetic
4] Na3[CoF6]N{a}_{3}\left[Co{F}_{6}\right] 3d6,sp3d23{d}^{6}, {sp}^{3}{d}^{2} 44 Paramagnetic</td></tr><tr><td>5]</td><td></td> </tr> <tr> <td>5]</td> <td>N{a}_{2}{O}_{2}</td><td></td> <td>{O}_{2}^{2 -}</td><td></td> <td>0</td><td>Diamagnetic</td> <td>Diamagnetic
6] CsO2Cs{O}_{2} O2−1{O}_{2}^{- 1} 11 Paramagnetic</td></tr></tbody></table>So,thetotalnumberofparamagneticcompoundsis</td> </tr> </tbody></table>So, the total number of paramagnetic compounds is3. Practice Coordination Compounds on Quantrex Academy →

More from Coordination Compounds

Reaction of PtF_6 with oxygen ( O_2 ) gas results in the formation of an ionic compound… JEE Advanced 2026The total number of all possible isomers for the square planar complex with formula… JEE Advanced 2026Consider that the coordinating atoms of the ligands in cis -[Co(NH _3 ) _4 Cl _2 ]Cl and… JEE Advanced 2026Number of paramagnetic complexes among the following is ________. [MnBr_4]^ 2… JEE Main 2026Which of the following sequences of hybridisation, geometry and magnetic nature are… JEE Main 2026An excess of AgNO _3 is added to 100 mL of a 0.05 M solution of… JEE Main 2026Match the LIST-I with LIST-II List-I Electronic configuration of tetrahedral metal ion… JEE Main 2026Which of the following are true about the energy of the given d-orbitals of a tetrahedral… JEE Main 2026 Full Coordination Compounds list All JEE Advanced PYQs