Coordination Compounds

The metal complex that is diamagnetic is (Atomic number: Fe, 26; Cu, 29)

The spin-only magnetic moment value of the compound with strongest oxidizing ability among $\mathrm{MnF_4}$, $\mathrm{MnF_3}$ and $\mathrm{MnF_2}$ is ______ B.M. [nearest integer]

The conductivity of a solution of complex with formula $\mathrm{CoCl_3(NH_3)_4}$ corresponds to 1:1 electrolyte, then the primary valency of central metal ion is ______

Low oxidation state of metals in their complexes are common when ligands :

$\mathrm{Fe^{3+}}$ cation gives a prussian blue precipitate on addition of potassium ferrocyanide solution due to the formation of :

The spin only magnetic moment of the complex present in Fehling's reagent is ______ B.M. (Nearest integer).

The disproportionation of $\mathrm{MnO_4^{2-}}$ in acidic medium resulted in the formation of two manganese compounds A and B. If the oxidation state of Mn in B is smaller than that of A, then the spin-only magnetic moment (μ) value of B in BM is ______. (Nearest integer)

Total number of relatively more stable isomer(s) possible for octahedral complex $\mathrm{[Cu(en)_2(SCN)_2]}$ will be ______.

Match List I with List II

Choose the correct answer from the options given below :

$\mathrm{[Fe(CN)_6]^{3-}}$ should be an inner orbital complex. Ignoring the pairing energy, the value of crystal field stabilization energy for this complex is (−) _______ Δ$_o$. (Nearest integer)

Which of the following 3d-metal ion will give the lowest enthalpy of hydration ($\Delta_{hyd}H$) when dissolved in water ?

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: H$_2$N-CH$_2$-CH$_2$-NH$_2$)

Sum of oxidation state (magnitude) and coordination number of cobalt in Na[Co(bpy)Cl$_4$] is _______.

(Given: bpy = 2,2′-bipyridine, structure shown)

In low and high spin octahedral Co$^{3+}$ complexes the number of electrons in t$_{2g}$ level respectively will be . (given At. no. of Co, 27)

In the ring test of NO$_3^-$ ion what is the oxidation number of iron in the complex (brown ring) [Fe(H$_2$O)$_5$NO]SO$_4$ ?

The calculated spin only magnetic moments of $\ce{[Cr(NH3)6]^{3+}}$ and $\ce{[CuF6]^{3-}}$ in BM, respectively, are

(Atomic numbers of Cr and Cu are 24 and 29, respectively)

The total number of possible isomers for $\ce{[Pt(NH3)4Cl2]Br2}$ is ____.

The pair(s) of complexes wherein both exhibit tetrahedral geometry is(are)

(Note: py = pyridine

Given: Atomic numbers of Fe, Co, Ni and Cu are 26, 27, 28 and 29, respectively)

Precipitate $\mathbf X$ is

Among the following, the brown ring is due to the formation of