Periodic table block

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:


 * s-block
 * p-block
 * d-block
 * f-block
 * g-block (no elements belonging to the g-block have been observed)

The block names (s, p, d, f, g, h,...) 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.

Blok (Periodieketabel) مستوى فرعي جدول دوري Bloque de la tabla periódica ব্লক (পর্যায় সারণী) Blok periodnog sistema elemenata Bloc de la taula periòdica Block des Periodensystems Bloque de la tabla periódica Bloko de la perioda tabelo Bloc du tableau périodique 주기율표 구역 Blok u periodnom sustavu Blok tabel periodik Blokk (lotukerfið) Blòch de la taula periòdica Blok jadual berkala Blok van het periodiek systeem 元素のブロック Blokkene i periodesystemet Bloco da tabela periódica Blocurile tabelului periodic Blok (periodická tabuľka) Lohko (jaksollinen järjestelmä) Periodiska systemets block தனிம அட்டவணை எதிர்மின்னி வலயம் บล็อกในตารางธาตุ 元素分区