group (gro͞op) n. 1. An assemblage of persons or objects gathered or located together; an aggregation: a group of dinner guests; a group of buildings near the road. 2. A set
unexpected element (uri:””, local:”Group”). Expected elements are <{}group> Meet an exception when unmarshalling from xml JAXBContext jc = JAXBContext.newInstance(Group.class); Unmarshaller
Actinoid element: Actinoid element, any of a series of 15 consecutive chemical elements in the periodic table from actinium to lawrencium (atomic numbers 89–103).
Boron group element: Boron group element, any of the six chemical elements constituting Group 13 (IIIa) of the periodic table. The elements are boron (B), aluminum (Al), gallium (Ga), indium (In), thallium (Tl), and nihonium (Nh).
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Group 8 is a group of chemical element in the periodic table.It consists of iron (Fe), ruthenium (Ru), osmium (Os) and hassium (Hs). They are all transition metals.Like other groups, the members of this family show patterns in electron configuration, especially in the outermost shells, resulting in trends in chemical behavior.
Group 7 contains the two naturally occurring transition metals discovered last: technetium and rhenium. Manganese was discovered much earlier owing to its much larger abundance in nature.
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The octet rule says “Main-group elements lose, gain or share electrons in such a way as to achieve an outer shell with eight electrons, ns 2 np 6 that matches the nearest rare-gas (noble-gas) electron configuration.”
This is a quick reference of elements that are new or have been redefined in HTML5. For each element there is a short description, a link to the specification, and a code example. “Our prognosis” links to the HTML5 Doctor article on the element. There are more articles in the Article Archive
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