Subjective Type

What is spectrochemical series? Explain the difference between a weak field ligand and a strong field ligand

Solution

Spectrochemical series gives the arrangement of ligands in the increasing order of crystal field splitting. Weak field ligands cause less crystal field splitting. They form high spin complexes. Examples include chloride ions, fluoride ions etc. Strong field ligands cause greater crystal field splitting. They form low spin complexes. Examples includes cyanide ion and CO.

SIMILAR QUESTIONS

Coordination Compounds

The most stable complex ion is:

Coordination Compounds

All the following complexes are found to be paramagnetic: $$P:[FeF_6]^{3-}; Q:[CoF_6]^{3-}; R:[V(H_2O)_6]^{3+}; S:[Ti(H_2O)_6]^{3+}$$ The correct order of their paramagnetic moment (spin only) is:

Coordination Compounds

The same amount of Zinc is treated separately with excess of sulphuric acid and excess of sodium hydroxide. What will be the ratio of volumes of hydrogen evolved ?

Coordination Compounds

State whether the given statement is true or false: $$[Cu(H_2O)_4]^{2+}+4NH_3\rightarrow [Cu(NH_3)_4]^{2+}+4H_2O$$ is spontaneous in forward side, and $$\Delta G=-ve$$

Coordination Compounds

Among the following species the one which causes the highest CFSE, $$\Delta _o$$ as a ligand is:

Coordination Compounds

The magnetic moment of an octahedral homoleptic $$Mn(II)$$ complex is $$5.9\ BM$$. The suitable ligand for this complex is:

Coordination Compounds

The octahedral complex of a metal ion $$ M^{3+}$$ with four monodentate ligands $$ L_{1}, L_{2}, L_{3}$$ and $$ L_{4}$$ absorb wavelengths in the region of red, green, yellow and blue, respectively. The increasing order of ligand strength of the four ligands is:

Coordination Compounds

Correct increasing order for the wavelengths of absorption in the visible region for the complexes of $$Co^{3+}$$ is:

Coordination Compounds

Which of the following is the correct order of increasing field strength of ligands to form coordination compounds?

Coordination Compounds

Among the following complexes, the diamagnetic complexes are: $$(K) : K_{3}[Fe(CN)_{6}]$$ $$(L) : [Co(NH_{3})_{6}]Cl_{3}$$ $$(M) : Na_{3}[Co(oxalate)_{3}]$$ $$(N) : [Ni (H_{2}O)_{6}]Cl_{2}$$ $$(O) : K_{2}[Pt(CN)_{4}]$$ $$(P) : [Zn(H_{2}O)_{6}](NO_{3})_{2}$$

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