Representative elements are the elements found in Groups 1, 2, and 13-18 of the periodic table. They display a wide range of physical and chemical properties and include metals, metalloids, and nonmetals.
5 Must Know Facts For Your Next Test
Representative elements include both metals (e.g., alkali metals, alkaline earth metals) and nonmetals (e.g., halogens, noble gases).
These elements typically exhibit a regular variation in properties across a period.
The electron configurations of representative elements end in $s$ or $p$ orbitals.
They are also known as 'main-group elements' because they represent the main reactive groups of the periodic table.
Groups containing representative elements often show trends such as increasing electronegativity from left to right across a period.