List of elements by atomic number

List of Elements by Atomic Number

The Periodic Table of Elements is a tabular arrangement of the chemical elements, organized on the basis of their atomic numbers, electron configurations, and recurring chemical properties. Elements are presented in order of increasing atomic number. The atomic number of an element is the number of protons found in the nucleus of an atom of that element. It is also known as the proton number. Since each element has a unique number of protons, the atomic number uniquely identifies a chemical element. In the periodic table, the elements are listed in order of increasing atomic number.

Overview

The concept of the atomic number was first proposed by the Russian chemist Dmitri Mendeleev in the late 19th century. However, it was not until the work of Henry Moseley in 1913 that the importance of the atomic number was fully understood. Moseley's experiments demonstrated that the atomic number, not the atomic mass, was the proper basis for the organization of the periodic table.

This list provides a brief overview of each element, including its atomic number, symbol, and atomic weight. The elements are listed from hydrogen, with an atomic number of 1, to oganesson, with an atomic number of 118.

List of Elements

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See Also

• Periodic Table
• Atomic Number
• Chemical Element
• Dmitri Mendeleev
• Henry Moseley