Periodic Table - Ptable
WEBInteractive periodic table showing names, electrons, and oxidation states. Visualize trends, 3D orbitals, isotopes, and mix compounds. Fully descriptive writeups.
Periodic Table of Elements - PubChem
WEBInteractive 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!
Periodic table - Wikipedia
WEBThe periodic table, also known as the periodic table of the elements, is an ordered arrangement of the chemical elements into rows ("periods") and columns ("groups"). It is an icon of chemistry and is widely used in physics and other sciences.
元素周期表 - Ptable
WEB交互式的周期表在动态的布局里展现名字,电子,曲线,轨道,同位素,搜索.全面的描述.
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 of Elements - IUPAC | International Union of Pure …
WEBPeriodic Table of Elements. The latest release of the Periodic Table (dated 4 May 2022) includes the most recent abridged standard atomic weight values released by the IUPAC Commission on Isotopic Abundances and Atomic Weights (CIAAW), compiled as part of the 2021 Table of Standard Atomic Weights 2021. For elements that lack isotopes with a ...
Periodic table | Definition, Elements, Groups, Charges, Trends,
WEB4 days ago · periodic table, in chemistry, the organized array of all the chemical elements in order of increasing atomic number —i.e., the total number of protons in the atomic nucleus. When the chemical elements are thus arranged, there is a recurring pattern called the “periodic law” in their properties, in which elements in the same column (group ...
The periodic table of the elements by WebElements
WEBSep 8, 2010 · 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. Explore the chemical elements through this periodic table
Periodic table - Elements, Groups, Blocks | Britannica
WEB4 days ago · Periodic table - Elements, Groups, Blocks: 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 …
Periodic Table of Elements - American Chemical Society
WEBThe periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic number. Scientists use the periodic table to quickly refer to information about an element, like atomic mass and chemical symbol.