Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas JEE Main2020ChemistryCoordination CompoundsPractice

Among the following, the species that is both paramagnetic and coloured is:

Options

  1. AM n O 4 2 -
  2. BK 4 V C N 6
  3. CV O 4 3 -
  4. DC r O 2 C l 2

Correct answer

A. M n O 4 2 -

Step-by-step solution

M n O 4 2 - ; Mn is in + 6 oxidation state. Electronic configuration is A r 18 3 d 1 4 s 0 . As it contains one unpaired electron it is paramagnetic and green coloured because of d-d transition in visible region. T i C l 6 2 - , V O 4 3 - and C r O 2 C l 2 are diamagnetic.

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, X ^+ Y ^- . Correct statement(s) is(are) 2026The total number of all possible isomers for the square planar complex with formula K [ M(NCS)(NO ₂ )(gly) ] is ____. ( M = metal ion and gly = NH ₂ CH ₂ COO ^- ) 2026Consider that the coordinating atoms of the ligands in cis -[Co(NH₃ )₄ Cl₂ ]Cl and mer -[Co(NH₃ )₃ Cl₃ ] octahedral complexes are at the vertices of an octahedron. The sum of total 2026Number of paramagnetic complexes among the following is ________. [ MnBr ₄]²⁻ , [ NiCl ₄]²⁻ , [ Ni(CN) ₄]²⁻ , [ Ni(CO) ₄] , [ CoF ₆]³⁻ , [ Fe(CN) ₆]⁴⁻ , [ Mn(CN) ₆]³⁻ , [ Ti(CN) ₆] 2026Which of the following sequences of hybridisation, geometry and magnetic nature are correct for the given coordination compounds ? A. [ NiCl ₄]²⁻- sp ^3 , tetrahedral, paramagnetic 2026An excess of AgNO₃ is added to 100 mL of a 0.05 M solution of tetraaquadichloridochromium (III) chloride. The number of moles of AgCl precipitated will be __________ 10⁻³ . (Neares 2026Match the List-I with List-II List-I Electronic configuration of tetrahedral metal ion List-II Crystal Field Stabilization Energy ( _t ) A. d^2 I. -0.6 B. d^4 II. -0.8 C. d^6 III. 2026Which of the following are true about the energy of the given d-orbitals of a tetrahedral complex? A. d_ xy = d_ xz > d_ x^2-y^2 B. d_ xy = d_ yz > d_ z^2 C. d_ x^2-y^2 > d_ z^2 > 2026 Full Coordination Compounds list All NTA Abhyas JEE Main PYQs