Here in this page we are going to discuss about concept called representative elements. The metallic elements which are found on the left side and in the center of the periodic table are known as representative elements. The metals of Groups 1 and 2 are known as the representative metals and those which are present in the center of the periodic table are called the transition representative metals. The lanthanides and actinides are special classes of transition metals.
Recollect from the former analysis of electron configurations that Hydrogen, Lithium and sodium all ended with s1 configuration. Whenever we look at other representative chemical element therein grouping we will have that the relation proceeds on down the periodic table. All of a common elements in group IA end in s1 configuration for their electron configuration.
The representative elements are classified into 3 main groups. These groups are as follows:
1) The alkali metals,
2) The alkaline earth metals, and
3) The post-transitional metals.
1) The Alkali Metals
The given alkali metals in table are the group IA (1) chemicals element. They make strongly basic hydroxides, thus the term "alkaline" being utilized in basic substances. They have got a high metallic behavior and are good reducing factors in the table.
2) The Alkaline Earth Metals
The given alkaline earth metal in the table are precisely the group IIA (2) chemicals element. They are named alkaline earth metal because "earths" of this grouping, lime (CaO), and magnesium oxide (MgO), yield alkaline chemicals reaction in the column. They have very good metallic properties, that includes conduction, reduction power, luster, softness, malleability, and ductility etc.
3) The Post-Transition Metals
The given post-transition metallic element combine the lower chemical element of group IIIA (13), IVA (14), and VA (15), formatted in a helical fashion in the table. There properties having the like analogy to the alkaline earth metal as the alkaline earth metal have to the alkaline metal in the table.
|Chemistry Help||Chemistry Tutor|