What is the simple definition of periodic table?

periodic table, in full periodic table of the elements, in chemistry, the organized array of all the chemical elements in order of increasing atomic number—i.e., the total number of protons in the atomic nucleus.

What is the best definition of periodic table?

The periodic table is a tabular arrangement of chemical elements that is arranged by increasing atomic number and groups elements according to recurring properties. The seven rows of the periodic table are called periods.

What do you mean by group of periodic table?

In chemistry, a group (also known as a family) is a column of elements in the periodic table of the chemical elements. Groups may also be identified using their topmost element, or have a specific name. For example, group 16 is also described as the “oxygen group” and as the “chalcogens”.

What is periodic table in dictionary?

periodic table. / (ˌpɪərɪˈɒdɪk) / noun. a table of the elements, arranged in order of increasing atomic number, based on the periodic law. Elements having similar chemical properties and electronic structures appear in vertical columns (groups)

What are the main groups of the periodic table?

The main group elements of the periodic table are groups 1, 2 and 13 through 18. Elements in these groups are collectively known as main group or representative elements. These groups contain the most naturally abundant elements, comprise 80 percent of the earth’s crust and are the most important for life.

Which are the groups in the periodic table?

On the periodic table, there are families which are groups of elements with similar properties. These families are alkali metals, alkaline earth metals, transition metals, post-transition metals, metalloids, halogens, noble metals, and noble gases.