Coordination Co...

The number of unpaired electron in complex $$[Cr(NO_{2})_{3}(NH_{3})_{3}]$$ is

Nickel $$(Z=28)$$ combines with a uni negative monodentate ligand $$X^{-}$$ to form a paramagnetic complex, $$[NiX_{4}]^{2-}$$. The number of unpaired electrons in the nickel and geometry of this complexion are, respectively:

which has the maximum conductivity in thier 0.1M solution?

In $$[Co(NH_3)_6]Cl_3$$, the number of covalent bonds is

Total number of possible isomers of $$\left[ Cu({ NH }_{ 3 })_{ 4 } \right] \left[ { PtCl }_{ 4 } \right]$$ is:

Given the molecular formula of the hexa coordinated complexes (A) $${ CoCl }_{ 3 }.{ 6NH }_{ 3 }$$ (B) $${ CoCl }_{ 3 }.{ 5NH }_{ 3 }$$ (C) $${ CoCl }_{ 3 }.{ 4NH }_{ 3 }$$. If the number of coordinated $${ NH }_{ 3 }$$ molecules in $$A, B$$ and $$C$$ respectively are $$6, 5$$ and $$4$$, primary valency in $$(A), (B)$$ and $$(C)$$ are

$$LiH + \underline {B}_2H_6 \rightarrow 2Li \underline{B}H_4$$

The complex ion having minimum wavelength of absorption in the visible region is:

Which isomer of $$CrCl_{3} . 6H_{2}O$$ is dark green in colour and forms one mole of $$AgCl$$ with excess of $$AgNO_{3}$$ solution ?

For the following two complexes 
$$A:[NiCl_6]^{4-}$$ and $$[NiCl_4]^{2-}$$ the ratio of CFSE will be nearly: