Who developed the first periodic table?
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Mendeleev from Russia
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look up the periodic table...duh
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58.93\nJust go to your Yahoo search page and type in 'Periodic Table'
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There is some dispute over who discovered oxygen.  Joseph Priestley and Antoine Lavoisier both worked on the discovery of oxygen.  Lavoisier published his work first, but I believe that Priestly did his work first.\n\nAntoine Lavoisier named hydrogen, but it was generated and described in earlier experiments by Theophrastus Bombastus von Hohenheim, Robert Boyle, and Henry Cavendish.
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There are 118 elements on the Periodic Table.
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stated the first version of the Law of conservation of mass, recognized and named oxygen (1778) as well as hydrogen, disproved the phlogiston theory, introduced the Metric system, invented the first periodic table including 33 elements, and helped to reform chemical nomenclature, not to mention where Mrs. Lavoisier's erogenous zones were.
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The Periodic Table of the Elements, as developed by Mendeleev.
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Oxygen was discovered for the first time by a Swedish Chemist, Carl Wilhelm Scheele, in 1772. Joseph Priestly, an English chemist, independently, discovered oxygen in 1774 and published his findings the same year, three years before Scheele published. Antonie Lavoisier, a French chemist, also discovered oxygen in 1775, was the first to recognize it as an element, and coined its name "oxygen"
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Euclid of Alexandria, the ancient Greek mathematician and author of the Elements \n\nclick here:http://en.wikipedia.org/wiki/Euclid\nhttp://en.wikipedia.org/wiki/Euclid%27s_Elements
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OVERSIMPLIFIED ANSWER\n\nActually, the periodic table was a stunning predictor of properties of elements. When it was first formulated, many of the elements we know of today had not been discovered, and so it contained many blank spots. Interestingly enough, it turns out that the groupings predicted properties of elements in groups. For instance, you could be reasonably certain that if 12 new halogens are found in the future, they will all have similar properties to the halogens that are grouped together today.\n\nHow do we know this? How were the elements grouped by properties before we knew what those properties were? Simply put, the periodic table is organized like this\n\nRight to left: number of electrons in the outermost orbital\n\nTop to bottom: atomic weight\n\nThis is oversimplified, but it works here. Electron configuration in the outer orbital is what determines an element's reactivity, the bulk of its chemical properties. Since there are 8 rows from left to right in the table, elements read from top to bottom all have the same number of electrons in their outer orbitals, so they all have similar properties.\n\nWhat's important to remember is that much of the periodic table was organized in its modern state BEFORE we knew this. Pretty nifty.
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Wolfgang Pauli was the first to propose it in 1930, but Enrico Fermi named it.\nIn 1932 James Chadwick discovers the neutron.\n But it wasn't until 1956 that Reines and Cowan actually discovered neutrino reactions in their atomic experiments.
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google it and type 'periodic table, first twenty elements'\nn u'll get sumthing, far quicker than lettin sum1 write them up 4 u.
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Alright, I looked up the history of the spelling of Aluminum.  We Americans don't, in truth, spell it incorrectly.  There are simply two variant spellings.  See below:\n\n"Etymology/nomenclature history\nThe earliest citation given in the Oxford English Dictionary for any word used as a name for this element is alumium, which Humphry Davy employed in 1808 for the metal he was trying to isolate electrolytically from the mineral alumina. The citation is from his journal Philosophical Transactions: "Had I been so fortunate as..to have procured the metallic substances I was in search of, I should have proposed for them the names of silicium, alumium, zirconium, and glucium." [11]\n\nBy 1812, Davy had settled on aluminum, which, as other sources note, matches its Latin root. He wrote in the journal Chemical Philosophy: "As yet Aluminum has not been obtained in a perfectly free state."[12] But the same year, an anonymous contributor to the Quarterly Review, a British political-literary journal, objected to aluminum and proposed the name aluminium, "for so we shall take the liberty of writing the word, in preference to aluminum, which has a less classical sound." [13]\n\nThe -ium suffix had the advantage of conforming to the precedent set in other newly discovered elements of the period: potassium, sodium, magnesium, calcium, and strontium (all of which Davy had isolated himself). Nevertheless, -um spellings for elements were not unknown at the time, as for example platinum, known to Europeans since the 16th century, molybdenum, discovered in 1778, and tantalum, discovered in 1802.\n\nAmericans adopted -ium for most of the 19th century, with aluminium appearing in Webster's Dictionary of 1828. In 1892, however, Charles Martin Hall used the -um spelling in an advertising handbill for his new electrolytic method of producing the metal, despite his constant use of the -ium spelling in all the patents he filed between 1886 and 1903. Hall's domination of production of the metal ensured that the spelling aluminum became the standard in North America; the Webster Unabridged Dictionary of 1913, though, continued to use the -ium version.\n\nIn 1926, the American Chemical Society officially decided to use aluminum in its publications; American dictionaries typically label the spelling aluminium as a British variant"
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Most of the elements have been either discovered by scientists or created by scientists.  Only a choice few have been known since antiquity -- usually ones that are found in their elemental state in nature or are easy to isolate from compounds (usually ores).  These are iron, copper, tin, lead, silver, gold, and mercury.  \n\nSome of the elements were discovered by people you might not consider scientists.  For example, Albertus Magnus was the first to isolate arsenic.  He was a theologian and philosopher in the 13th century, but also researched alchemy, long before true "scientific" methods were established -- would you count arsenic as being discovered by a scientist?  It's kind of a gray area.
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Rutherford and Bohr did much of the early theoretical work on the structure of the atom but the real breakthrough was in 1938 when the Austrian physicist Lise Meitner and the German chemist Otto Hahn bombarded uranium with neutrons and caused it to splinter into barium and krypton. \n\nShe coined the term "fission" for this process. borrowing a term from biology. When the Nobel Prize was awarded for this joint work over 30 years, after WW2, he was awarded it and she was omitted. Being female and Jewish had caused her career to be eclipsed by his.
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Hydrogen was first produced by Theophratus Bombastus von Hohenheim (1493–1541)—also known as Paracelsus—by mixing metals with acids. He was unaware that the explosive gas produced by this chemical reaction was hydrogen. In 1671, Robert Boyle described the reaction between two iron fillings and dilute acids, which results in the production of gaseous hydrogen.[3] In 1766, Henry Cavendish was the first to recognize hydrogen as a discrete substance, by identifying the gas from this reaction as "inflammable" and finding that the gas produces water when burned in air. Cavendish stumbled on hydrogen when experimenting with acids and mercury. Although he wrongly assumed that hydrogen was a compound of mercury—and not of the acid—he was still able to accurately describe several key properties of hydrogen.\n\nAntoine Lavoisier gave the element its name and proved that water is composed of hydrogen and oxygen. One of the first uses of the element was for balloons. The hydrogen was obtained by mixing sulfuric acid and iron. In 1931, Harold C. Urey discovered deuterium, an isotope of hydrogen, by repeated distilling the same sample of water. For this discovery, Urey received the Nobel Prize in Chemistry in 1934. In the same year, the third isotope, tritium, was discovered. Because of its relatively simple structure, hydrogen has often been used in models of how an atom works.
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The naming of elements precedes the atomic theory of matter, although at the time it was not known which chemicals were elements and which compounds. When it was learned, existing names (e.g., gold, mercury, iron) were kept in most countries, and national differences emerged over the names of elements either for convenience, linguistic niceties, or nationalism. For example, the Germans use "Wasserstoff" for "hydrogen" and "Sauerstoff" for "oxygen," while some romance languages use "natrium" for "sodium" and "kalium" for "potassium," and the French prefer the obsolete but historic term "azote" for "nitrogen."\nThe current system of chemical notation was invented by Berzelius. In this typographical system chemical symbols are not used as mere abbreviations - though each consists of letters of the Latin alphabet - they are symbols intended to be used by peoples of all languages and alphabets. The first of these symbols were intended to be fully universal; since Latin was the common language of science at that time, they were abbreviations based on the Latin names of metals - Fe comes from Ferrum, Ag from Argentum. The symbols were not followed by a period (full stop) as abbreviations were. Later chemical elements were also assigned unique chemical symbols, based on the name of the element, but not necessarily in English. For example, sodium has the chemical symbol 'Na' after the Latin natrium. The same applies to "W" (wolfram) for tungsten, "Hg" (hydrargyrum) for mercury, "K" (kalium) for potassium, and "Sb" (stibium) for antimony.