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.
Are group elements elements representative?
On the periodic table of elements, columns of elements define element groups that share many common properties. There are two sets of groups in the periodic table. The first set are Group A elements and are also known as representative elements.
What is representative group?
A representative group consists of a small number of people who have been chosen to make decisions on behalf of a larger group .
What are called representative elements?
Answer: The elements within the first two families (Groups I and II on the far left) and the last six families or groups (on the right) of the Periodic Table are known as representative elements. S-lock and P-block elements come under the category of representative elements.
What groups form the representative elements?
The representative elements occur in groups 1, 2, and 12–18 . These elements are representative metals, metalloids, and nonmetals.
What is another name for main group elements?
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.
What are group A elements?
The elements in group IA are called the alkali metals . The elements in group IIA are called the alkaline earth metals. The elements in group VIIA are called the halogens and the elements in group VIIIA are called the noble gases or the inert gases.
What are group B elements called?
Group B elements are called transition metals .
What are the main elements?
THE FIVE BASIC ELEMENTS of the UNIVERSE: Fire, Earth, Metal, Water, Wood . The Five Basic Elements are Fire, Earth, Water, Metal, and Wood. These elements are understood as different types of energy in a state of constant interaction and flux with one another.
Is holmium a main group element?
| Holmium | Group group n/a | Period period 6 | Block f-block | Electron configuration [Xe] 4f 11 6s 2 |
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Who is called representative?
noun. English Language Learners Definition of representative (Entry 2 of 2) : someone who acts or speaks for or in support of another person or group. : a member of the House of Representatives of the U.S. Congress or of a state government. : a person or thing that is typical of a group.
What is representative sample?
A representative sample is a subset of a population that seeks to accurately reflect the characteristics of the larger group . ... Samples are useful in statistical analysis when population sizes are large because they contain smaller, manageable versions of the larger group.
What is the role of a representative?
What is a Representative? Also referred to as a congressman or congresswoman, each representative is elected to a two-year term serving the people of a specific congressional district. Among other duties, representatives introduce bills and resolutions, offer amendments and serve on committees.
What blocks are representative elements?
The elements in the periodic table are arranged into four blocks: s, p, d, and f . The elements present in s- and p-blocks are collectively known as representative elements or main group elements.
Which group is called Chalcogens?
oxygen group element, also called chalcogen, any of the six chemical elements making up Group 16 (VIa) of the periodic classification—namely, oxygen (O), sulfur (S), selenium (Se), tellurium (Te), polonium (Po), and livermorium (Lv).
What are bridge elements?
Bridge elements are those elements which come under the second period . 2. Na and Mg are linked to Group IA and IB, and they are forming a bridge with the elements which are placed diagonally opposite to Na and Mg, and the properties of both the elements are similar due to electronegativity.
