Chemical element - Wikipedia
网页A 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]
List of chemical elements - Wikipedia
网页118 chemical elements have been identified and named officially by IUPAC. A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [1]
Chemical element | Definition, Origins, Distribution, & Facts
网页A 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 - Ptable
网页Interactive periodic table showing names, electrons, and oxidation states. Visualize trends, 3D orbitals, isotopes, and mix compounds. Fully descriptive writeups.
List of chemical elements - Periodic Table
网页Here's a list of all of the chemical elements of the periodic table ordered by increasing atomic number. Click on the column header to sort the table by that column or click on an element name to get detailed facts about the element.
Periodic table | Definition, Elements, Groups, Charges, Trends,
网页3 天之前 · 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.
Periodic Table of Elements - PubChem
网页Interactive periodic table with up-to-date element property data collected from authoritative sources. Look up chemical element names, symbols, atomic masses and other properties, visualize trends, or even test your elements knowledge by playing a periodic table game!
What Is a Chemical Element? Definition and Examples - ThoughtCo
网页2019年12月5日 · A chemical element is a substance consisting of only one type of atom. In other words, all atoms in an element contain the same number of protons. The identity of a chemical element cannot be changed by any chemical reaction.
What Is an Element in Chemistry? Definition and Examples
网页2020年10月17日 · In chemistry, an element is defined as a pure substance composed of atoms that all have the same number of protons in the atomic nucleus. In other words, all atoms of an element have the same atomic number. The atoms of an element (sometimes called “chemical element”) cannot be broken into smaller particles by any chemical means.
Element List – Element Names, Symbols, and Atomic Numbers
网页2014年5月17日 · Here is a list of elements of the periodic table, their atomic numbers, and element symbols. The list is ordered by increasing atomic number, which is the number of protons in an atom of that element. Each element has a symbol, which is a one- or two-letter abbreviation of its name.
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