Periodic Table (standard)

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Periodic Table (standard)

This is a standard display of the periodic table of elements. For more information on its contents and history, see the article Periodic Table .

Notes

Actinide s and Lanthanide s are collectively known as " Rare Earth Element s", a deprecated term. Regarding Group membership of these elements, see Here .

Alkali metals, alkaline earth metals, transition metals, actinides, lanthanides, and poor metals are all collectively known as "metals".

Halogens and noble gases are also non-metals.

State at Standard Temperature And Pressure (0° C and 1 Atm )

those numbered in are Gas eous

those numbered in are Liquid

those numbered in are Solid

Natural occurrence

those with solid borders are Primordial Element s, which have stable Isotope s older than the Earth

those with dashed borders arise naturally from decay of other elements, and have no isotopes with a Half-life comparable to the age of the Earth; however, some are found in trace amounts in radioactive ores

those with dotted borders are Synthetic Element s, which do not occur naturally

---''Note:'' Although Californium (Cf, 98) does not occur naturally on Earth, Cf and its decay products occur in the Universe; their Electromagnetic Emissions are regularly observed in Supernova spectra

those without borders have not been discovered or synthesised yet

SEE ALSO

Periodic Table

Periodic Table (extended)

Isotope Table (complete)

Table Of Nuclides (200 kB)

EXTERNAL LINKS

WebElements.com

Los Alamos Table (for American school kids, but contains more of the history)