Coordination Compounds

What is the fundamental difference between a Double Salt (like Mohr's Salt) and a Coordination Complex?

According to Werner's Theory, which valency is ionisable and corresponds to the oxidation state?

In the complex $CoCl_3 \cdot 4NH_3$ , precipitation with $AgNO_3$ yields only 1 mole of $AgCl$ . What is the secondary valency of Co?

Which valency in Werner's theory gives the complex its definitive geometry?

Define a Chelating Ligand.

What is the denticity and charge of the EDTA ligand?

Name two common Ambidentate ligands.

What is the IUPAC name for $[Pt(NH_3)_2Cl(NO_2)]$ ?

How do you name the anionic complex metal ion for Iron (Fe) and Silver (Ag)?

Calculate the oxidation state of Ni in $[Ni(CO)_4]$and Fe in$[Fe(CN)_6]^{3-}$ .

What is the IUPAC name for $K_3[Al(C_2O_4)_3]$ ?

Correct name for the ligand $H_2O$ and $CO$ in complexes?

Which type of isomerism arises from the exchange of ligands between the coordination sphere and the ionization sphere?

What specific type of geometrical isomerism is found in octahedral complexes of the type $[MA_3B_3]$ ?

Identify the type of isomerism: $[Co(NH_3)_5(NO_2)]Cl_2$ vs$[Co(NH_3)_5(ONO)]Cl_2$.

Why do tetrahedral complexes ( $sp^3$ ) generally not show geometrical isomerism?

Which specific isomer of $[Pt(NH_3)_2Cl_2]$ is used as an anti-cancer drug?

What is the condition for a complex to exhibit Optical Isomerism?

Give an example of Coordination Isomerism.

According to VBT, what is the hybridization of $[Ni(CN)_4]^{2-}$ ?

Why is $[NiCl_4]^{2-}$paramagnetic while$[Ni(CO)_4]$is diamagnetic?

Identify the hybridization and type of complex for $[Co(NH_3)_6]^{3+}$ .

What is the magnetic nature of $[CoF_6]^{3-}$ ?

Define Inner Orbital Complex.

What is the "Spin-only" magnetic moment formula?

In an Octahedral crystal field, how do the d-orbitals split?

What is the relationship between Tetrahedral ( $\Delta_t$ ) and Octahedral ( $\Delta_o$ ) splitting energy?

In Tetrahedral splitting, which set of orbitals has lower energy?

What condition leads to a High Spin complex in terms of $\Delta_o$ and Pairing Energy ( $P$ )?

Explain the origin of colour in coordination complexes.

Why is $Ti^{4+}$ ( $TiO_2$ ) colourless?

Define Spectrochemical Series.

Which has a higher $\Delta_o$ : $[Co(NH_3)_6]^{3+}$or$[Rh(NH_3)_6]^{3+}$ ?

Describe Synergic Bonding in metal carbonyls.

How does synergic bonding affect the C-O bond length?

In metal carbonyls, the metal is usually in which oxidation state?

Which is the strongest $\pi$ -acceptor ligand among $CO, CN^-, NO^+$ ?

What is the Chelate Effect on stability?

Define Stepwise Stability Constant ( $K_n$ ).

Which is more stable: $[Co(NH_3)_6]^{3+}$or$[Co(en)_3]^{3+}$ ?

Which complex is used for the treatment of Lead (Pb) poisoning?

What is the coordination compound found in Chlorophyll?

What is the central metal ion in Vitamin B12 (Cyanocobalamin)?

Name the catalyst used in the hydrogenation of alkenes (Wilkinson's Catalyst).

How is Hardness of Water estimated using coordination chemistry?

Which complex is formed during the fixing of photographic films (Hypo solution)?

In the extraction of Gold (Au), what complex is formed with Cyanide?

What is the biological role of Hemoglobin?

What is the electronic configuration of a $d^4$ ion in a High Spin Octahedral field?

Why does anhydrous $CuSO_4$ appear white, while hydrated $CuSO_4 \cdot 5H_2O$ is blue?

Based on stability constants ( $\log K$ ), which is the most stable complex: $[Cu(NH_3)_4]^{2+}$ , $[Cu(CN)_4]^{2-}$ , or $$[Cu(en)_2]^{2+...

Arrange $[Co(NH_3)_6]^{3+}$ , $[Co(CN)_6]^{3-}$ , and $[Co(H_2O)_6]^{3+}$ in increasing order of wavelength of light absorbed.

When 0.1 mol of $CoCl_3 ​(NH_3​)_5$ ​is treated with excess $AgNO_3$​, 0.2 mol of $AgCl$ is obtained. What is the conductivity type of this elec...

If the Crystal Field Stabilization Energy (CFSE) for octahedral $[CoCl_6]^{4-}$is$18,000~cm^{-1}$ , what is the CFSE for tetrahedral $$[CoCl_4]...

Isomer 'A' $(CoSO_4​ Cl⋅5NH_3​)$ gives a white ppt with $AgNO_3$ ​but no reaction with $BaCl_2$​. What is its structural formula?

Why does $[Fe(H_2O)_6]^{3+}$have a magnetic moment of 5.92BM while [Fe(CN)_6]^{3-}$$ is only 1.74 BM?

Why does an aqueous pink solution of $Co(II)$turn deep blue upon addition of excess$HCl$ ?

Arrange these complexes in increasing order of conductivity: $[Co(NH_3)_3Cl_3]$ , $[Co(NH_3)_4Cl_2]Cl$ , $[Co(NH_3)_6]Cl_3$ .

Write the correct IUPAC name for $[Pt(NH_3)_2Cl(NO_2)]$ .

If a complex of type $[M(AA)_2X_2]^{n+}$ is optically active, which geometrical isomer must it be?

Why are low spin tetrahedral complexes rarely observed?

What kind of isomerism exists between violet $[Cr(H_2O)_6]Cl_3$ and greyish-green$[Cr(H_2O)_5Cl]Cl_2 \cdot H_2O$?

What is the hybridization and magnetic nature of $[Fe(CN)_6]^{3-}$ ?

Why is anhydrous $CuSO_4$colourless while$CuSO_4 \cdot 5H_2O$ is blue?

Arrange the following anions in increasing order of field strength (Crystal Field Splitting power): $Cl^-$ , $CN^-$ , $F^-$ .

Write the electronic configuration of $[CoF_6]^{3-}$ ( $Co^{3+}$ is $3d^6$ ) in terms of $t_{2g}$and$e_g$ .

Assertion: Toxic metal ions are removed by chelating ligands. Reason: Chelate complexes tend to be more stable. (True/False?)

Which of these complexes shows Geometrical Isomerism: $[Co(NH_3)_6]^{3+}$ , $[Co(CN)_5(NC)]^{3-}$ , or $[Cr(H_2O)_4Cl_2]^{+}$ ?

What is the hybridization and geometry of the central metal ion in the rosy-red complex $[Ni(DMG)_2]$?

What specific interaction provides extra stability to the $[Ni(DMG)_2]$ complex and maintains its planar structure?