Main-group element: Difference between revisions
No edit summary |
No edit summary |
||
| Line 1: | Line 1: | ||
[[Image:Periodic table.svg|450px|thumb|right|The [[periodic table]] of the chemical elements. The columns represent the groups. Groups 1, 2 and 13 to 18 are the " |
[[Image:Periodic table.svg|450px|thumb|right|The [[periodic table]] of the chemical elements. The columns represent the groups. Groups 1, 2 and 13 to 18 are the [["Chemistry is the worst class ever!!!!!!."]] |
||
In [[chemistry]] and atomic [[physics]], '''main group elements''' are elements in groups (periodic columns) whose lightest members are represented by [[helium]], [[lithium]], |
In [[chemistry]] and atomic [[physics]], '''main group elements''' are elements in groups (periodic columns) whose lightest members are represented by [[helium]], [[lithium]], |
||
[[beryllium]], [[boron]], [[carbon]], [[nitrogen]], [[oxygen]], and [[fluorine]] as arranged in the [[periodic table]] of the elements. Main group elements include elements (except hydrogen) in groups 1 and 2 (s-block), and groups 13 to 18 (p-block). [[Group 12 element]]s are usually considered to be transition metals, however zinc (Zn), cadmium (Cd), and mercury (Hg) share some properties of both groups, and some scientists believe they should be included as main group elements. <ref>{{cite web|title=Nomenclature of Inorganic Chemistry|url=http://old.iupac.org/reports/provisional/abstract04/connelly_310804.html|publisher=International Union of Pure and Applied Chemistry|accessdate=27 September 2011}}</ref> <ref>{{cite journal | journal = Journal of Chemical Education | volume = 80 | issue = 8 | year = 2003 | url = http://www.uv.es/~borrasj/ingenieria_web/temas/tema_1/lecturas_comp/p952.pdf | title = The Place of Zinc, Cadmium, and Mercury in the Periodic Table | first = William B. | last = Jensen | pages = 952–561 | doi = 10.1021/ed080p952|bibcode = 2003JChEd..80..952J }}</ref> |
[[beryllium]], [[boron]], [[carbon]], [[nitrogen]], [[oxygen]], and [[fluorine]] as arranged in the [[periodic table]] of the elements. Main group elements include elements (except hydrogen) in groups 1 and 2 (s-block), and groups 13 to 18 (p-block). [[Group 12 element]]s are usually considered to be transition metals, however zinc (Zn), cadmium (Cd), and mercury (Hg) share some properties of both groups, and some scientists believe they should be included as main group elements. <ref>{{cite web|title=Nomenclature of Inorganic Chemistry|url=http://old.iupac.org/reports/provisional/abstract04/connelly_310804.html|publisher=International Union of Pure and Applied Chemistry|accessdate=27 September 2011}}</ref> <ref>{{cite journal | journal = Journal of Chemical Education | volume = 80 | issue = 8 | year = 2003 | url = http://www.uv.es/~borrasj/ingenieria_web/temas/tema_1/lecturas_comp/p952.pdf | title = The Place of Zinc, Cadmium, and Mercury in the Periodic Table | first = William B. | last = Jensen | pages = 952–561 | doi = 10.1021/ed080p952|bibcode = 2003JChEd..80..952J }}</ref> |
||
Revision as of 19:25, 7 October 2011
[[Image:Periodic table.svg|450px|thumb|right|The periodic table of the chemical elements. The columns represent the groups. Groups 1, 2 and 13 to 18 are the "Chemistry is the worst class ever!!!!!!." In chemistry and atomic physics, main group elements are elements in groups (periodic columns) whose lightest members are represented by helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, and fluorine as arranged in the periodic table of the elements. Main group elements include elements (except hydrogen) in groups 1 and 2 (s-block), and groups 13 to 18 (p-block). Group 12 elements are usually considered to be transition metals, however zinc (Zn), cadmium (Cd), and mercury (Hg) share some properties of both groups, and some scientists believe they should be included as main group elements. [1] [2]
In older nomenclature the main group elements are groups IA and IIA, and groups IIIB to 0 (CAS groups IIIA to VIIIA).
Main group elements (with some of the lighter transition metals) are the most abundant elements on the earth, in the solar system, and in the universe. They are sometimes called the representative elements.
References
- ^ "Nomenclature of Inorganic Chemistry". International Union of Pure and Applied Chemistry. Retrieved 27 September 2011.
- ^ Jensen, William B. (2003). "The Place of Zinc, Cadmium, and Mercury in the Periodic Table" (PDF). Journal of Chemical Education. 80 (8): 952–561. Bibcode:2003JChEd..80..952J. doi:10.1021/ed080p952.