Chapter: 12th Chemistry : UNIT 4 : Transition and Inner Transition Elements
f-block elements - Inner transition elements
In the inner transition elements there are two series of elements.
1) Lanthanoids ( previously called lanthanides)
2) Actinoids ( previously called actinides)
f-block elements –
Inner transition elements
In the inner transition
elements there are two series of elements.
1) Lanthanoids (
previously called lanthanides)
2) Actinoids (
previously called actinides)
Lanthanoid series
consists of fourteen elements from Cerium (58Ce) to Lutetium (71Lu)
following Lanthanum (57La).These elements are characterised by the
preferential filling of 4f orbitals, Similarly actinoids consists of 14
elements from Thorium (90Th) to Lawrencium (103Lr)
following Actinium (89Ac).These elements are characterised by the
preferential filling of 5f orbital.
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12th Chemistry : UNIT 4 : Transition and Inner Transition Elements : f-block elements - Inner transition elements |
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12th Chemistry : UNIT 4 : Transition and Inner Transition Elements