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The elements of 3d transition series are given as: Sc Ti V Cr Mn Fe Co
Answer the following: Which element is a strong oxidising agent in +3 oxidation state and why?
Concept: General Properties of the Transition Elements (d-block)
Why do the transition elements have higher enthalpies of atomisation?
Concept: General Properties of the Transition Elements (d-block)
In 3d series (Sc to Zn), which element has the lowest enthalpy of atomisation and why?
Concept: General Properties of the Transition Elements (d-block)
Complete the following equation:
\[\ce{2MnO4- + 6H+ + 5NO2- ->}\]
Concept: Some Important Compounds of Transition Elements - Oxides and Oxoanions of Metals
What are the consequences of lanthanoid contraction?
Concept: F-block Elements >> The Lanthanoids
How would you account for the following?
Zr (Z = 40) and Hf (Z = 72) have almost identical radii.
Concept: General Properties of the Transition Elements (d-block)
Write the formula of Tetraminodichloroplatinum (IV) chloridex.
Concept: Nomenclature of Coordination Compounds - Formulas of Mononuclear Coordination Entities
Write the IUPAC name of 
Concept: Nomenclature of Coordination Compounds - Naming of Mononuclear Coordination Compounds
Write the dispersed phase and dispersion medium of the following colloidal systems:
(i) Smoke
(ii) Milk
Concept: Catalysis >> Enzyme Catalysis
What are lyophilic and lyophobic colloids ? Which of these sols can be easily coagulated on the addition of small amounts of electrolytes?
Concept: Purification of Colloidal Solution
What are lyophilic and lyophobic colloids ? Which of these sols can be easily coagulated on the addition of small amounts of electrolytes?
Concept: Purification of Colloidal Solution
Write the differences between physisorption and chemisorption with respect to the following:
(i) Specificity
(ii) Temperature dependence
(iii) Reversibility and
(iv) Enthalpy change
Concept: Types of Adsorption
Write the IUPAC names of the following coordination compounds: [Cr(NH3)3Cl3]
Concept: Nomenclature of Coordination Compounds - Naming of Mononuclear Coordination Compounds
The complex ion `[Co(H_2O)_5 (ONO)]^(2+) `
(A) linkage isomer
(B) ionisation isomer
(C) co-ordination isomer
(D) geometrical isomer
Concept: Isomerism in Coordination Compounds >> Structural Isomerism
Write the fomulae of the following compounds
Sodium hexanitrito- N - cobaltate (III)
Concept: Nomenclature of Coordination Compounds - Formulas of Mononuclear Coordination Entities
Write the IUPAC name of the given compound:
Concept: Nomenclature of Coordination Compounds - Naming of Mononuclear Coordination Compounds
When a coordination compound CoCl3.6NH3 is mixed with AgNO3, 3moles of AgCl are precipitated per mole of the compound. Write the IUPAC name of the coordination compound.
Concept: Nomenclature of Coordination Compounds - Naming of Mononuclear Coordination Compounds
For the complex [Fe(H2O)6]+3, write the hybridisation, magnetic character and spin of the complex. (At, number : Fe = 26)
Concept: Bonding in Coordination Compounds >> Magnetic Properties of Coordination Compounds
Draw one of the geometrical isomers of the complex [Pt (en)2Cl2] +2 which is optically inactive
Concept: Isomerism in Coordination Compounds >> Stereoisomerism
Define the following terms: Lyophilic colloid
Concept: Purification of Colloidal Solution
