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Periodic table block: Wikis


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From Wikipedia, the free encyclopedia

A block of the periodic table of elements is a set of adjacent groups. The respective highest-energy electrons in each element in a block belong to the same atomic orbital type. Each block is named after its characteristic orbital; thus, the blocks are:

The block names (s, p, d, f.) are derived from the quality of the spectroscopic lines of the associated atomic orbitals: sharp, principal, diffuse and fundamental, the rest being named in alphabetical order. Blocks are sometimes called families.

Simple English

A block in the periodic table is an area of chemical elements that has the same electron arrangement. There are four blocks; the S-block, the P-block, the D-block, and the F-block. The alkali metals and the alkaline earth metals are in the S-block. The group of elements after the transition metals are the P-block. The transition metals are the D-block, as well as the last lanthanide and actinide. The rest of the inner transition metals are in the F-block.

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