The periodic table, also known as the periodic table of the elements, arranges the chemical elements into rows ("periods") and columns ("groups"). It is an icon of chemistry and is widely used in physics and other sciences. It is a depiction of the periodic law, which says that when the elements are arranged in order of their atomic numbers an approximate recurrence of their properties is evident. The table is divided into four roughly rectangular areas called blocks. Elements in the same group tend to show similar chemical characteristics.
Dmitri Ivanovich Mendeleev was a Russian chemist and inventor. He is best known for formulating the Periodic Law and creating a version of the periodic table of elements. He used the Periodic Law not only to correct the then-accepted properties of some known elements, such as the valence and atomic weight of uranium, but also to predict the properties of three elements that were yet to be discovered.
A nonmetal is a chemical element that mostly lacks metallic properties. Seventeen elements are generally considered nonmetals, though some authors recognize more or fewer depending on the properties considered most representative of metallic or nonmetallic character. Some borderline elements further complicate the situation.
The National Book Critics Circle (NBCC) is an American nonprofit organization with more than 700 members. It is the professional association of American book review editors and critics, known primarily for the National Book Critics Circle Awards, a set of literary awards presented every March.
The periodic table is an arrangement of the chemical elements, structured by their atomic number, electron configuration and recurring chemical properties. In the basic form, elements are presented in order of increasing atomic number, in the reading sequence. Then, rows and columns are created by starting new rows and inserting blank cells, so that rows (periods) and columns (groups) show elements with recurring properties. For example, all elements in group (column) 18 are noble gases that are largely—though not completely—unreactive.
Macmillan Publishers is a British publishing company traditionally considered to be one of the 'Big Five' English language publishers. Founded in London in 1843 by Scottish brothers Daniel and Alexander MacMillan, the firm would soon establish itself as a leading publisher in Britain. It published two of the best-known works of Victorian era children's literature, Lewis Carroll's Alice's Adventures in Wonderland (1865) and Rudyard Kipling's The Jungle Book (1894).
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.
Richard Ward Morris was an American author, editor, and poet. He published more than 20 books in his lifetime, many of which were written to "explain the intricacies of science to the general public". His literary style and narrative talents allowed for easy reading of what were otherwise heady and intellectual topics, bringing sometimes abstract scientific ideas to a level the common person could understand.
Sir Martyn Poliakoff is a British chemist, working on fundamental chemistry, and on developing environmentally acceptable processes and materials. The core themes of his work are supercritical fluids, infrared spectroscopy and lasers. He is a research professor in chemistry at the University of Nottingham. As well as carrying out research at the University of Nottingham, he is a lecturer, teaching a number of modules including green chemistry.
Theodore W. "Theo" Gray is a co-founder of Wolfram Research, science author, and co-founder of app developer Touch Press.
The Periodic Table: Elements with Style is a 2007 children's science book created by Simon Basher and written by Adrian Dingle. It is the first book in Basher's science series, which includes Physics: Why Matter Matters!, Biology: Life As We Know It, Astronomy: Out of this World!, Rocks and Minerals: A Gem of a Book, and Planet Earth: What Planet Are You On?, each of which is 128 pages long.
Hugh Aldersey-Williams is a British author and journalist. Aldersey-Williams was educated at Highgate School and studied the natural sciences at the University of Cambridge. His several books discuss issues surrounding natural and man-made designs. He has curated exhibitions at the Victoria and Albert Museum as well as the Wellcome Collection.
This is a list of 194 sources that list elements classified as metalloids. The sources are listed in chronological order. Lists of metalloids differ since there is no rigorous widely accepted definition of metalloid. Individual lists share common ground, with variations occurring at the margins. The elements most often regarded as metalloids are boron, silicon, germanium, arsenic, antimony and tellurium. Other sources may subtract from this list, add a varying number of other elements, or both.
The dividing line between metals and nonmetals can be found, in varying configurations, on some representations of the periodic table of the elements. Elements to the lower left of the line generally display increasing metallic behaviour; elements to the upper right display increasing nonmetallic behaviour. When presented as a regular stair-step, elements with the highest critical temperature for their groups lie just below the line.
Ida Freund was the first woman to be a university chemistry lecturer in the United Kingdom. She is known for her influence on science teaching, particularly the teaching of women and girls. She wrote two key chemistry textbooks and invented the idea of baking periodic table cupcakes, as well as inventing a gas measuring tube, which was named after her.
Eric R. Scerri is a chemist, writer and philosopher of science of Maltese origin. He is a lecturer at the University of California, Los Angeles; and the founder and editor-in-chief of Foundations of Chemistry, an international peer reviewed journal covering the history and philosophy of chemistry, and chemical education.
Edward G. Mazurs (1894–1983) was a chemist who wrote a history of the periodic system of the chemical elements which is still considered a "classic book on the history of the periodic table". Originally self-published as Types of graphic representation of the periodic system of chemical elements (1957), it was reviewed by the ACS in 1958 as "the most complete survey of the range of human imagination in representing graphically the Mendeleev periodic law."
Sam Kean is an American writer. He has written for The New York Times Magazine, Mental Floss, Slate, Psychology Today, and The New Scientist. He has also published six books which discuss scientific discoveries in a narrative style. His books received positive reviews in The Wall Street JournalLibrary Journal, and The New York Times. He was born in Sioux Falls, South Dakota, and lives in Washington, D.C.
Periodic Tales: The Curious Lives of the Elements is a 2011 popular science and history book by English writer Hugh Aldersey-Williams, on the history and cultural associations of the chemical elements. The book is divided into five sections, "Power", "Fire", "Craft", "Beauty", and "Earth", which group elements according to their primary cultural connotations, rather than their position on the periodic table. For certain elements such as phosphorus, the author documents his attempts to obtain samples by reproducing the original method of discovery. He also visits the site of discovery of several elements uncovered in modern times, including the famed Ytterby mine in Sweden, from which seven new elements were isolated.
Clarice Evone Phelps (née Salone) is an American nuclear chemist researching the processing of radioactive transuranic elements at the US Department of Energy's Oak Ridge National Laboratory (ORNL). She was part of ORNL's team that collaborated with the Joint Institute for Nuclear Research to discover tennessine. The International Union of Pure and Applied Chemistry (IUPAC) recognizes her as the first African-American woman to be involved with the discovery of a chemical element.
