periodic table

Definitions

A tabular chart of the chemical elements according to their atomic numbers so that elements with similar properties are in the same group (column).

Equivalents

36 more languages

Afrikaansperiodieke tabel

العربيةالجدول الدوري

Azərbaycan dilidövri cədvəl

Bosanskiperiodni sustav elemenata

Catalàtaula periòdica

ČeštinaMendělejevperiodická tabulka

Cymraegtabl cyfnodol

Ελληνικάπεριοδικός πίνακας

EestiMendelejevi tabel

فارسیجدول تناوبی

Suomialkuaineiden jaksollinen järjestelmäalkuainetaulukkojaksollinen järjestelmä

Gaeilgetábla peiriadach

Galegotáboa periódica

עבריתהטבלה המחזורית

हिन्दीआवर्त कोष्टकआवर्त सारणी

Hrvatskiperiodni sustav elemenata

Magyarperiódusos rendszer

Íslenskalotukerfi

Italianotavola periodicatavola periodica degli elementi

日本語周期表

ភាសាខ្មែរតារាងខួបធាតុគីមី

한국어주기율표주기표

Lietuviųperiodinė elementų lentelė

Македонскипериоден систем

Bahasa Melayujadual berkala

Nederlandsperiodiek systeem

Polskitablica Mendelejewaukład okresowyukład okresowy pierwiastków

Portuguêstabela periódica

Românătabel periodic

Русскийпериодическая системапериодическая система элементовпериоди́ческая табли́цатабли́ца Менделе́ева+ 1 more

Српскиperiodni sustav elemenata

Svenskaperiodiska systemet

Kiswahilijedwali la elementimfumo radidia

ไทยตารางธาตุ

Türkçeperiyodik cetvelperiyodik tablo

Tiếng Việtbảng tuần hoànbảng tuần hoàn các nguyên tố hoá học

Examples

“The atomic weight of krypton would accordingly be 81.62; the mean⟳ of former determinations is 81.28. This is in accordance with its position in the periodic table, which lies between bromine, 80, and rubidium, 85.”

“Silica and alumina are distinctly the most abundant and characteristic petrogenic constituents, and with them are most frequently associated those elements toward the extreme petrogenic end⟳ of the periodic table, especially potassium, sodium, and calcium in the order⟳ named; and these elements are associated with each other.”

“Gallium, the 32nd most abundant element in the earth's crust, is a silver-grey metal, widely distributed in trace amounts in many rocks and ores. Its name⟳, gallium (Lat., gallia, France), honors the discovery of this element by a French chemist in 1875, just four years after [Dmitri] Mendeleev predicted its probable existence from a blank space in his newly described periodic table.”

“The main theme of TRL [Transuranium Research⟳ Laboratory] research⟳ with transuranium elements has been the exploration of a region of the periodic table that is relatively new and inaccessible to most scientists. […] Our research⟳ with the heavy elements has extended our knowledge considerably and tested our ideas concerning how the periodic table is constructed.”

“Taking into account the masses and percents of the isotopes, the average weight of a mercury atom is 200.59 amu, the atomic weight that is listed on some periodic tables. This type⟳ of average is called a weighted average. On other periodic tables, such as the one in this book, mercury's atomic weight is rounded to the nearest whole number⟳ (201 amu).”

“The atomic masses you see⟳ in many periodic tables may vary⟳ slightly, so for consistency, we've rounded all atomic mass values to two decimal places before plugging them into equations.”

CEFR level