Period 2 element — A period 2 element is one of the chemical elements in the second row (or period) of the periodic table of the chemical elements. The periodic table is laid out in rows to illustrate recurring (periodic) trends in the chemical behaviour of the… … Wikipedia
Period 1 element — A period 1 element is one of the chemical elements in the first row (or period) of the periodic table of the chemical elements. The periodic table is laid out in rows to illustrate recurring (periodic) trends in the chemical behaviour of the… … Wikipedia
Period 7 element — A period 7 element is one of the chemical elements in the seventh row (or period ) of the periodic table of the elements.This period contains the heaviest element which occurs naturally on earth, uranium. Subsequent elements in the period have… … Wikipedia
Period 8 element — A period 8 element is one of the chemical elements in the eighth row (or period ) of the (extended) periodic table of the elements. None of these elements has yet been created and it is possible that none of the elements have isotopes with stable … Wikipedia
Period 5 element — A period 5 element is one of the chemical elements in the fifth row (or period ) of the periodic table of the elements.These are: PeriodicTablesFooter … Wikipedia
Period 4 element — A period 4 element is one of the chemical elements in the fourth row (or period ) of the periodic table of the elements.These are: PeriodicTablesFooter … Wikipedia
Period 6 element — A period 6 element is one of the chemical elements in the sixth row (or period ) of the periodic table of the elements, including the lanthanides.These are: PeriodicTablesFooter … Wikipedia
Period (gene) — period serina Identifiers Organism D. melanogaster Symbol per Entrez … Wikipedia
Element Lad — Superherobox| caption= character name=Element Lad real name=Jan Arrah publisher=DC Comics debut= Adventure Comics # 307 (April 1963) creators= Edmond Hamilton John Forte homeworld= Trom species= alliances=Legion of Super Heroes aliases=Mystery… … Wikipedia
chemical element — Introduction also called element, any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. This article considers the… … Universalium
