- Periodic table - Wikipedia
The 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")
- Periodic table - Simple English Wikipedia, the free encyclopedia
The periodic table is a table that puts all known chemical elements in a specific order Elements that have similar characteristics are often put near each other In the table, the elements are placed in the order of their atomic numbers starting with the lowest number of one, hydrogen
- Extended periodic table - Wikipedia
An extended periodic table theorizes about chemical elements beyond those currently known and proven The element with the highest atomic number known is oganesson (Z = 118), which completes the seventh period (row) in the periodic table All elements in the eighth period and beyond thus remain purely hypothetical Elements beyond 118 would be placed in additional periods when discovered, laid
- List of chemical elements - Wikipedia
The definitive visualisation of all 118 elements is the periodic table of the elements, whose history along the principles of the periodic law was one of the founding developments of modern chemistry
- Types of periodic tables - Wikipedia
Since Dimitri Mendeleev formulated the periodic law in 1871, and published an associated periodic table of chemical elements, authors have experimented with varying types of periodic tables including for teaching, aesthetic or philosophical purposes
- Periodic table | Definition, Elements, Groups, Charges, Trends, Facts . . .
Periodic table, in chemistry, the organized array of all the chemical elements in order of increasing atomic number When the elements are thus arranged, there is a recurring pattern called the ‘periodic law’ in their properties, in which elements in the same column (group) have similar properties
- History of the periodic table - Wikipedia
The history of the periodic table reflects over two centuries of growth in the understanding of the chemical and physical properties of the elements, with major contributions made by Antoine-Laurent de Lavoisier, Johann Wolfgang Döbereiner, John Newlands, Julius Lothar Meyer, Dmitri Mendeleev, Glenn T Seaborg, and others [1][2]
- Group (periodic table) - Wikipedia
In chemistry, a group (also known as a family) [1] is a column of elements in the periodic table of the chemical elements There are 18 numbered groups in the periodic table; the 14 f-block columns, between groups 2 and 3, are not numbered
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