Name the type of isomerism exhibited and draw isomers:
(I) [Co(NH3)6][Cr(CN)6]
(II) [Co(en)3]3+
(III) [Co(NH3)3(NO2)3]
Name the type of isomerism exhibited and draw isomers:
(I) [Co(NH3)6][Cr(CN)6]
Solution: This shows ionization isomerism.
Isomer: [Co(CN)6][Cr(NH3)6]
(II) [Co(en)3]3+
Solution: This shows optical isomerism due to chirality from en ligands.
Isomers: d- and l- forms (non-superimposable mirror images).
(III) [Co(NH3)3(NO2)3]
Solution: This compound exhibits geometrical isomerism, as the arrangement of ligands around the metal ion can vary. The two possible isomers are cis- and trans- configurations.
(i) Draw the diagram which indicates the splitting of d-orbitals in tetrahedral field.
(ii) Write any one limitation of valence bond theory.
(i)[Ni(CN)₄]²⁻ and [Ni(CO)(_4)] have different structures, but do not differ in their magnetic behaviour. Explain.
(ii) Write the formula of Tetraamineaquachloridocobalt(III)chloride.
(i) Write two postulates of Werner's coordination theory.
(ii) Draw the geometrical isomers of [(NH_3)_3(NO_2)_3] and give their structures.
A racing track is built around an elliptical ground whose equation is given by \[ 9x^2 + 16y^2 = 144 \] The width of the track is \(3\) m as shown. Based on the given information answer the following: 
(i) Express \(y\) as a function of \(x\) from the given equation of ellipse.
(ii) Integrate the function obtained in (i) with respect to \(x\).
(iii)(a) Find the area of the region enclosed within the elliptical ground excluding the track using integration.
OR
(iii)(b) Write the coordinates of the points \(P\) and \(Q\) where the outer edge of the track cuts \(x\)-axis and \(y\)-axis in first quadrant and find the area of triangle formed by points \(P,O,Q\).