Block (periodic table)

Set of adjacent groups / From Wikipedia, the free encyclopedia

Dear Wikiwand AI, let's keep it short by simply answering these key questions:

Can you list the top facts and stats about Block (periodic table)?

Summarize this article for a 10 year old


A block of the periodic table is a set of elements unified by the atomic orbitals their valence electrons or vacancies lie in.[1] The term seems to have been first used by Charles Janet.[2] Each block is named after its characteristic orbital: s-block, p-block, d-block, f-block and g-block.

Blocks s, f, d, and p in the periodic table

The block names (s, p, d, and f) are derived from the spectroscopic notation for the value of an electron's azimuthal quantum number: sharp (0), principal (1), diffuse (2), and fundamental (3). Succeeding notations proceed in alphabetical order, as g, h, etc., though elements that would belong in such blocks have not yet been found.

Oops something went wrong: