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 transition metals have great tendency to form complex compounds and they form large number of such compounds due to:
(i) Small sizes of the metal ions.
(ii) High ionic charge in them.
(iii) Availability of partially filled d-orbitals for bond promotion.
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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