Chemistry Coordination Compounds

Which one of the following is an inner orbital complex as well as diamagnetic in behavior ?

The stepwise formation of ${{\left[Cu{\left(N{H}_3\right)}_4\right]}^2}^{+}$ is given below:

$C{u}^{2+}+N{H}_3\stackrel{k_1}{\rightleftharpoons }{\left[Cu\left(N{H}_3\right)\right]}^{2+}$

${\left[Cu\left(N{H}_3\right)\right]}^{2+}+N{H}_3\stackrel{k_2}{\rightleftharpoons }{\left[Cu{\left(N{H}_3\right)}_2\right]}^{2+}$

${\left[Cu{\left(N{H}_3\right)}_2\right]}^{2+}+N{H}_3\stackrel{k_3}{\rightleftharpoons }{\left[Cu{\left(N{H}_3\right)}_3\right]}^{2+}$

${\left[Cu{\left(N{H}_3\right)}_3\right]}^{2+}+N{H}_3\stackrel{k_4}{\rightleftharpoons }{\left[Cu{\left(N{H}_3\right)}_4\right]}^{2+}$            

The value of stability constants k₁, k₂, k₃ and k₄ are $10^4,1.58*10^3,5*10^{2}and10^2$  respectively.

The overall equilibrium constants for dissociation of ${\left[Cu{\left(N{H}_3\right)}_4\right]}^{2+}isx*10^{-12}.$  The value of x is________ (Rounded off to the nearest integer)

3 moles of metal complex with formula Co(en)₂Cl₃, gives 3moles of silver chloride on treatment with excess of silver nitrate. The secondary valency of Co in the complex is _____. (Round off to the Nearest Integer).

Out of following the number of complexes which are diamagnetic is / are
(i) [Co(H₂O)₆]Cl₃
(ii) [Co(NH₃)₆]Cl₂
(iii) [Fe(CO)₅]
(iv) [Ni(NH₃)₆]²⁺
(v) K₂[NiF₆]
(vi) K₂[PtCl₄]
(vii) Na₂[ZnCl₄]

Given below are two statements:
Statement I : [Mn(CN)₆]³⁻, [Fe(CN)₆]³⁻ and [Co(C₂O₄)₃]³⁻ are d²sp³ hybridised
Statement II : [MnCl₄]²⁻ and [FeF₆]³⁻ are paramagnetic and have 4 and 5 unpaired electrons, respectively.
In the light of the above statements, choose the correct answer from the options given below:

Reaction of [Co(H2O)6]2+ with excess ammonia and in the presence of oxygen results into a diamagnetic product. Number of electrons present in t2g-orbitals of the product is_________.

Which one of the following complexes exhibits chirality?

Consider the following reaction

What fraction of one edge centred octahedral void lies in one unit cell of fcc?

Homoleptic complex from the following complexes is: