Definitions for main group element
main group el·e·ment

WiktionaryRate this definition:1.3 / 6 votes

1. main group elementnoun

   Any chemical element from the main group.

WikipediaRate this definition:0.0 / 0 votes

1. main group element

   In chemistry and atomic physics, the main group is the group of elements (sometimes called the representative elements) whose lightest members are represented by helium, lithium, beryllium, boron, carbon, nitrogen, oxygen, and fluorine as arranged in the periodic table of the elements. The main group includes the elements (except hydrogen, which is sometimes not included) in groups 1 and 2 (s-block), and groups 13 to 18 (p-block). The s-block elements are primarily characterised by one main oxidation state, and the p-block elements, when they have multiple oxidation states, often have common oxidation states separated by two units. Main-group elements (with some of the lighter transition metals) are the most abundant elements on Earth, in the Solar System, and in the universe. Group 12 elements are often 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 in the main group. Occasionally, even the group 3 elements as well as the lanthanides and actinides have been included, because especially the group 3 elements and many lanthanides are electropositive elements with only one main oxidation state like the group 1 and 2 elements. The position of the actinides is more questionable, but the most common and stable of them, thorium (Th) and uranium (U), are similar to main-group elements as thorium is an electropositive element with only one main oxidation state (+4), and uranium has two main ones separated by two oxidation units (+4 and +6).In older nomenclature, the main-group elements are groups IA and IIA, and groups IIIB to 0 (CAS groups IIIA to VIIIA). Group 12 is labelled as group IIB in both systems. Group 3 is labelled as group IIIA in the older nomenclature (CAS group IIIB).

WikidataRate this definition:0.0 / 0 votes

1. Main group element

   In chemistry and atomic physics, main group elements are elements in groups 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 in groups 1 and 2, and groups 13 to 18. Group 12 elements are usually considered to be transition metals; however, zinc, cadmium, and mercury share some properties of both groups, and some scientists believe they should be included as main group elements. In older nomenclature the main group elements are groups IA and IIA, and groups IIIB to 0. Main group elements are the most abundant elements on the earth, in the solar system, and in the universe. They are sometimes called the representative elements.

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Numerology

1. Chaldean Numerology

   The numerical value of main group element in Chaldean Numerology is: 5

2. Pythagorean Numerology

   The numerical value of main group element in Pythagorean Numerology is: 8

References

1. ^ Wiktionary
   https://en.wiktionary.org/wiki/Main_Group_Element
2. ^ Wikipedia
   https://en.wikipedia.org/wiki/Main_Group_Element
3. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=main group element