Chemical element - Wikipedia
WEBA chemical element is a chemical substance that cannot be broken down into other substances by chemical reactions. The basic particle that constitutes a chemical element is the atom. Elements are identified by the number of protons in their nucleus, [1] known as the element's atomic number. [2]
Periodic Table - Ptable
WEBInteractive periodic table showing names, electrons, and oxidation states. Visualize trends, 3D orbitals, isotopes, and mix compounds. Fully descriptive writeups.
Element ( Read ) | Chemistry - CK-12 Foundation
WEBNov 1, 2012 · A pure substance is called an element. An element is a pure substance because it cannot be separated into any other substances. Currently, 92 different elements are known to exist in nature, although additional elements have been formed in labs. All matter consists of one or more of these elements.
The periodic table and the physics that drives it - Nature
WEBJun 29, 2020 · In this Perspective, we critically analyse the periodic table of elements and the current status of theoretical predictions and origins for the heaviest elements, which combine both quantum...
Interactive Periodic Table of the Elements - Science Notes and Projects
WEBThis interactive periodic table of the elements is a launchpad for information about all the elements. Click on the element symbol to view a page containing facts and data concerning that element. A list of the elements in order of …
Periodic table | Definition, Elements, Groups, Charges, Trends,
WEB3 days ago · The periodic table is a tabular array of the chemical elements organized by atomic number, from the element with the lowest atomic number, hydrogen, to the element with the highest atomic number, oganesson.
Chemical element | Definition, Origins, Distribution, & Facts
WEBA chemical element is any substance that cannot be decomposed into simpler substances by ordinary chemical processes. Elements are the fundamental materials of which all matter is composed. Learn more about the origins, distribution, and characteristics of chemical elements in this article.
Periodic Table – Royal Society of Chemistry
WEBInteractive periodic table with element scarcity (SRI), discovery dates, melting and boiling points, group, block and period information.
Periodic table - Elements, Groups, Blocks | Britannica
WEB3 days ago · The periodic table of the elements contains all of the chemical elements that have been discovered or made; they are arranged, in the order of their atomic numbers, in seven horizontal periods, with the lanthanoids (lanthanum, 57, to lutetium, 71) and the actinoids (actinium, 89, to lawrencium, 103) indicated separately below.
Periodic Table of the Elements – The Physics Hypertextbook
WEBThe periodic table is an organized arrangement of the chemical elements in table form. Key features are discussed.