Short Answer TypeGive Possible reason for the fact that the radii of Mn2+ ions of the first row transition metals. Ti2+ (Z = 22) to Cu2+ (Z = 29) decrease with increasing atomic number.
Explain the catalytic action of Fe(III) between the reaction of I– and persulphate ion S2O82–.
The most important reason transition metals are good catalysts is that they can lend electrons or withdraw electrons from the reagent, depending on the nature of the reaction. The ability of transition metals to be in a variety of oxidation states, the ability to interchange between the oxidation states and the ability to form complexes with the reagents and be a good source for electrons make transition metals good catalysts.
What can be inferred from the magnetic moment values of the following complex species?
|
Example |
Magnetic Moment (BM) |
|
K4[Mn(CN)6] |
2.2 |
|
[Fe(H2O)6]2+ |
5.3 |
|
K3 [Mn Cl4] |
5.9 |
Long Answer TypeShort Answer TypeWhy are transition metal fluorides ionic in nature, whereas bromides and chlorides are covalent in nature.
Why are the ionization enthalpies of 5d elements greater than those of 3d and 4d elements?
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