December 2011
Beginner
560 pages
12h 42m
English
Content preview from Basic Concepts of Inorganic Chemistry, 2nd Edition
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5
Transition Metals, Lanthanides and Actinides
Elements having partially filled inner d-orbitals [(n − 1)d orbitals] in their atoms or ions are known as transition elements. These elements are d-block elements and are present between s-block and p-block elements in the periodic table. For example, Fe (26)
Fe (26) |
[Ar]183d64s2 |
Thus Fe, Fe2+ and Fe3+ are transition elements. |
Fe2+ |
[Ar]l83d6 |
|
Fe3+ |
[Ar]183d5 |
|
Ti (22) |
[Ar]183d24s2 |
|
Ti2+ |
[Ar]183d2 |
Transition elements |
Ti+3 |
[Ar]183d1 |
|
Ti+4 |
[Ar]18 |
Not like transition elements as inner d orbitals have no electron (3d°) |
General electron configuration (n − 1)dXns2 or (n − 1)dXns1, x = 1 to 10
There are four transition series elements in the periodic table. They are
Table 5.1 ...
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