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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"). It is an icon of chemistry and is widely used in physics and other sciences.
Period 4 includes the biologically essential elements potassium and calcium, and is the first period in the d-block with the lighter transition metals. These include iron , the heaviest element forged in main-sequence stars and a principal component of the Earth, as well as other important metals such as cobalt , nickel , and copper .
This is an accepted version of this page This is the latest accepted revision, reviewed on 22 February 2025. Periodic table of the elements with eight or more periods Extended periodic table Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium ...
The periodic table is a tabular arrangement of the chemical elements.. Periodic table may also refer to: . The Periodic Table (short story collection), by Primo Levi, 1975; The Periodic Table (Basher book), a 2007 children's science book
[4] [5] On August 14, 2012, a download option was created, called DCuevana. As of 2014, cuevana.tv distributed the software Cuevana Storm which, like Popcorn Time, operates as a torrent client that lets downloaders immediately watch a movie while simultaneously uploading it to others. [6] The website was placed on the US notorious markets list ...
Torrente 4: Lethal Crisis is a 2011 Spanish black comedy film directed, written, produced by and starring Santiago Segura as title character José Luis Torrente. The film was the fourth in the popular Torrente series (following Torrente 3: El protector ) and successful at the box office. [ 1 ]