Periodic Table 4Ft x 2Ft

It is a systematic arrangement of chemical elements, organized by increasing atomic number, electron configurations, and recurring chemical properties. It has arranged elements based on their atomic masses and noticed repeating patterns, or periodicity, in their properties. Modern versions of the table are based on atomic number rather than atomic mass.

Elements in the periodic table are arranged in rows called periods and columns called groups or families. Elements in the same group often exhibit similar chemical behaviors due to having the same number of valence electrons. For instance, alkali metals in Group 1 are highly reactive, especially with water, while noble gases in Group 18 are inert.