Question

Periodic table

Answer 1

The periodic table is a tabular arrangement of chemical elements, organized based on their atomic number, electron configuration, and recurring chemical properties. It provides a systematic way to classify and organize the elements. Each element is represented by its atomic symbol, atomic number, and atomic weight.

The periodic table consists of rows called periods and columns called groups or families. Elements in the same period have the same number of electron shells, while elements in the same group have similar chemical properties. The table is divided into several blocks: s-block, p-block, d-block, and f-block, based on the sublevel of the elements.

There are currently 118 known elements on the periodic table, ranging from hydrogen (H) with atomic number 1 to oganesson (Og) with atomic number 118. The elements are organized in increasing order of atomic number from left to right and top to bottom.

The periodic table not only provides a visual representation of all the known elements but also helps in understanding their properties, behavior, and relationships. It is an essential tool in chemistry and other scientific disciplines.