安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- List of chemical elements - Wikipedia
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] The definitive visualisation of all 118 elements is the periodic table of the elements, whose history along the principles of the periodic law was
- Periodic Table - Ptable - Properties
Interactive periodic table showing names, electrons, and oxidation states Visualize trends, 3D orbitals, isotopes, and mix compounds Fully descriptive writeups
- The periodic table of the elements by WebElements
The periodic table of the elements The periodic table is an arrangment of the chemical elements ordered by atomic number so that periodic properties of the elements (chemical periodicity) are made clear
- Chemical element | Definition, Origins, Distribution, Facts . . .
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
- Elementos
En esta web podrás encontrar toda la información sobre los elementos de la tabla periódica Descubrirás las propiedades de los elementos como su número atómico, su posición en la tabla periódica o a qué grupo pertenecen
- Repaso de la tabla periódica (artículo) | Khan Academy
Los elementos de cada período tienen diferentes propiedades, pero poseen la misma cantidad de niveles en su estructura atómica En total la tabla periódica tiene 7 períodos
- Periodic Table of Elements: Los Alamos National Laboratory
The Chemistry Division's Periodic Table describes the history, properties, resources, uses, isotopes, forms, costs, and other information for each element
- Periodic Table
Interactive periodic table of the chemical elements; Properties, history, name origin, facts, applications, isotopes, electronic configuation, crystal structure
|
|
|