The periodic table is a table of all the chemical elements arranged by increasing atomic number.
It is widely used in chemistry, physics, and other sciences, and is generally seen as an icon of chemistry. It is a graphic formulation of the periodic law, which states that the properties of the chemical elements exhibit an approximate periodic dependence on their atomic numbers.
Elements in the same column (group) have similar properties because of a recurring pattern called the "periodic law".
The table is divided into four roughly rectangular areas called blocks, and the rows of the table are called periods, and the columns are called groups.
Trends run through the periodic table, with nonmetallic character (keeping their own electrons) increasing from left to right across a period, and from down to up across a group, and metallic character (surrendering electrons to other atoms) increasing in the opposite direction.
The underlying reason for these trends is electron configurations of atoms.
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The Periodic Table of Elements is an interactive table that shows names, electrons, and oxidation states of elements. It also provides 3D orbitals, isotopes, and mix compounds, as well as fully descriptive writeups. The table also includes atomic number property values, mass excess, binding energy, and half-life.
Periodic Table - Ptable
The periodic table is a graphic description of the periodic law, which states that the properties and atomic structures of the chemical elements are a periodic function of their atomic…
Periodic table - Wikipedia
Periodic Table. The Royal Society of Chemistry's interactive periodic table features history, alchemy, podcasts, videos, and data trends across the periodic table. Click the tabs at the top to explore…
Periodic Table – Royal Society of Chemistry
The periodic table is a masterpiece of organised chemical information and the evolution of chemistry's periodic table into the current form is an astonishing achievement. The International Union of Pure…
The periodic table of the elements by WebElements
The 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…
Periodic Table of Elements - American Chemical Society