Coordination Compounds

${\left[Fe{\left(CN\right)}_{5}NOS\right]}^{4-}$  ${{}_{}}^{}$ Violet colour

${{}_{}}^{}$  ${\left[Fe{\left(SCN\right)}_6\right]}^{4-}$ Blood red colour

$$ $F{e}_4{\left[Fe{\left(CN\right)}_6\right]}_3{H}_{2}O\to$  Prussian blue colour

$$ ${\left[Fe{\left(CN\right)}_6\right]}^{4-}\to$  Yellow colour

FeCl₃. 3H₂O i.e. [Fe(H₂O)₃], K₃[Fe(CN]₆ and [Co(NH₃)₆]Cl₃; the last two complex are inner-orbital complex due to presence of strong ligand.

$\therefore {\Delta }_{0}of{K}_3\left[Fe{\left(CN\right)}_6\right]>{\Delta }_{0}of\left[Co{\left(N{H}_3\right)}_6\right]C{l}_3$       

Because CN^- is strong ligand

$\therefore {\Delta }_0\propto \frac{1}{\lambda }$         

More ${\Delta }_0$  smaller value of absorbed $\lambda$ .

$K_3\left[Fe{\left(CN\right)}_6\right]\to F{e}^{+3}=4s^{0}3d^{5}4p^0$       

$\therefore u.e=1$      

$\therefore \mu =\sqrt[]{1*\left(1+2\right)}B.M=\sqrt[]{3}B.M$        

= 1.732 B.M

$\approx$ 2

the lowest spin only magnetic moment for Ni⁺² because of minimum unpaired electron.

Fehling's solution is a complex of   $C{u}^{2+},C{u}^{2+}=3d^9$

No. of unpaired e^- = 1

MM =  $\sqrt[]{1\left(1+2\right)}=\sqrt[]{3}=1.73BM$

$\left[Cu{\left(en\right)}_2{\left(SCN\right)}_2\right]$

More stable isomers = 3 (trans isomers)

Number of Co-Co Bond = X = 1

Number of terminal ligand = Y = 6

Number of Co-Co Bond = X = 1

Number of terminal ligand = Y = 6

Photochemical smog occurs in warm, dry and sunny climate. The main components of photochemical smog result from the action of sunlight on unsaturated hydrocarbons and nitrogen oxides produced by automobiles and factories. Photochemical smog has high concentration of oxidising agents so called as oxidizing smog.

Kindly consider the following figure

Kindly consider the following figure