(a) (i) Write the electronic configuration of d^5 on the basis of crystal field splitting theory if Δ_0< P. (ii) [ Fe ( CN )_6]^3- is weakly…

Write the electronic configuration of $\displaystyle d^{5}$ on the basis of crystal field splitting theory if $\displaystyle \Delta_{0}<\mathrm{P}$.

$\displaystyle \left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{3-}$ is weakly paramagnetic whereas $\displaystyle \left[\mathrm{Fe}(\mathrm{CN})_{6}\right]^{4-}$ is diamagnetic. Give reason to support this statement. [Atomic no. : $\displaystyle \mathrm{Fe}=26$ ]

Write the number of ions produced from the complex $\displaystyle \left[\mathrm{Co}\left(\mathrm{NH}_{3}\right)_{6}\right] \mathrm{Cl}_{2}$ in solution.

Calculate the spin only magnetic moment of the complex $\displaystyle \left[\mathrm{CoF}_{6}\right]^{3-}$. (Atomic no. of $\displaystyle \mathrm{Co}=27$ )

Write the IUPAC name of the given complex : \[\left[\mathrm{CrCl}_{2}\left(\mathrm{H}_{2} \mathrm{O}\right)_{4}\right] \mathrm{Cl} \]

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