Скачать или смотреть f-block element|| introduction to f-block element || introduction to lanthanides and actinides

f-block element|| introduction to f-block element || introduction to lanthanides and actinides

•f-block elements are referred as inner transition elements because in these elements the last electron enters in the(n-2) f-orbital and their placement in the periodic table due to their electron configurations.
These elements have electrons (1 to 14) in the f orbital, (0 to 1) in the d orbital of the penultimate energy level and in the outermost orbital.

•The f-block consists of elements in which the 4f and 5f orbitals are progressively filled.
•Classification of f- block `elements
: 4f-block elements/ 1st inner transition series/ lanthanides
5f-block elements/ 2nd inner transition series/ actinides
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Their electronic configuration is (n-2)f¹⁻¹⁴, (n-1)d⁰⁻¹,ns²
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In f- block elements, the last electrons or valence electrons generally enter into (n-2)f orbitals that are inner to transition elements (n-1)d, known as internal transition elements.
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