(a) (i) Write the electronic configuration of d^4 on the basis of crystal field splitting theory if Δ_0> P. (ii) [ Co ( NH_3)_6]^3+ is an inner…

Write the electronic configuration of $\displaystyle \mathrm{d}^{4}$ on the basis of crystal field splitting theory if $\displaystyle \Delta_{0}>\mathrm{P}$.

$\displaystyle \left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right]^{3+}$ is an inner orbital complex whereas $\displaystyle \left[\mathrm{Ni}\left(\mathrm{NH}_{3}\right)_{6}\right]^{2+}$ is an outer orbital complex. (Atomic number : $\displaystyle \mathrm{Co}=27, \mathrm{Ni}=28$ )

Write the number of ions produced from the complex $\displaystyle \left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{4}$ in solution.

Calculate the spin only magnetic moment of the complex $\displaystyle \left[\mathrm{Fe}\left(\mathrm{H}_{2} \mathrm{O}\right)_{6}\right]^{2+}$. (Atomic number of $\displaystyle \mathrm{Fe}=26$ )

Which out of the following two complexes is more stable and why ? \[\left[\mathrm{CoF}_{6}\right]^{3-}, \quad\left[\mathrm{Co}\left(\mathrm{C}_{2} \mathrm{O}_{4}\right)_{3}\right]^{3-} \]

Write the IUPAC name of the given complex :$\displaystyle \left[\mathrm{Pt}\left(\mathrm{NH}_{3}\right)_{2} \mathrm{Cl}_{2}\right]$