User:Aquarius Rising/stuff

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Création des articles


 * Tree


 * House

Amélioration des articles


 * Airplane


 * Rocket

Ebauches


 * Star


 * Moon
 * Image : [[Image:Parlement palestinien après les élections de janvier 2005.JPG|40px]]



interesting page formatting: User:Davidcannon/Honours

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Periodic table


 * Actinides and lanthanides are collectively known as "rare earth elements" (deprecated). IUPAC does not assign them a group number.
 * 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
 * those with atomic number in  are gases
 * those with atomic number in  are liquids
 * those with atomic number in  are solid

Natural occurrence
 * those with solid borders have stable isotopes older than the Earth (Primordial elements).
 * those with dashed borders arise naturally from decay of other elements, and have no isotopes with half-life beyond or comparable to the age of the Earth (some can however be found in trace amounts in radioactive ores).
 * those with dotted borders are synthetic elements.
 * those without borders have not been discovered yet.

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