The tetrahedral crystal field splitting energy is equal to ................. of the octahedral crystal field splitting energy.

If the crystal field splitting energy of a tetrahedral complex $\Delta_t$ of the type $[ML_4]^{n+}$ is $x \ eV$,what is the crystal field splitting energy with respect to an octahedral complex,$[ML_6]^{n+}$?

Arrange the following ligands in the order of increasing field strength.

$I$. $H_2O$	$II$. $CO$
$III$. $NH_3$	$IV$. $I^{-}$
$V$. $F^{-}$

Among the following complexes,the one which shows zero crystal field stabilization energy $(CFSE)$ is

Calculate the crystal field stabilization energy $(CFSE)$ in $[Co(CN)_6]^{3-}$.

Complexes with $CN^-$ ligands are generally...