Coordination Compounds – JEE Main Level Quiz

Q1. The metal atom present in the coordination complex MABXL, where A, B, X and L are all different unidentate ligands and M is the central metal atom, involves sp³ hybridisation. The total number of geometrical isomers possible for this complex is:

Q2. In which of the following coordination complexes will the crystal field stabilisation energy (CFSE) in an octahedral field be equal to zero?

Q3. The d-electronic configuration of an octahedral Co(II) complex having a magnetic moment of approximately 3.95 Bohr magneton (BM) is:

Q4. A transition metal M among Mn, Cr, Co and Fe has the highest standard electrode potential for the M³⁺/M²⁺ couple. It forms a complex of the type [M(CN)₆]⁴⁻. The number of electrons present in the e_g orbitals of this complex is:

Q5. The spin-only magnetic moment value (nearest integer) of the Mⁿ⁺ ion formed among Ni, Zn, Mn and Cu having the least enthalpy of atomisation is:

Q6. The number of optical isomers exhibited by the iron complex (A) obtained from the reaction: FeCl₃ + KOH + H₂C₂O₄ → A is:

Q7. The conditions which favour the formation of a metal complex having the electronic configuration t₂g³ e_g¹ are:

Q8. An octahedral coordination compound with formula CoCl₃·nNH₃ on treatment with excess AgNO₃ gives two moles of AgCl. If the oxidation state of cobalt is x, the value of (x + n) is:

Q9. The calculated spin-only magnetic moments of the complexes K₃[Fe(OH)₆] and K₄[Fe(OH)₆] respectively are:

Q10. Let X be the number of acidic oxides among VO₂, V₂O₃, CrO₃, V₂O₅ and Mn₂O₇. Let Y be the primary valency of cobalt in the complex [Co(H₂NCH₂CH₂NH₂)₃]₂(SO₄)₃. The value of X + Y is: