No, there is no element with the symbol "Le" on the periodic table. The periodic table lists all known elements and their symbols, but "Le" is not one of them.
The noble gases are the most stable unreactive elements on the periodic table, they are helium, neon, argon, krypton, xenon, radon
Numerous forms of Periodic Table have been devised from time to time. Some forms emphasise chemical reactions and valence, whereas others stress the electronic configuration of elements. A modern version the so called long form of the periodic tableof the elements, is the most convenient and widely used.
A Periodic table The Periodic Table of the Elements.
Vege-table.
No, there is no element with the symbol "Le" on the periodic table. The periodic table lists all known elements and their symbols, but "Le" is not one of them.
The noble gases are the most stable unreactive elements on the periodic table, they are helium, neon, argon, krypton, xenon, radon
Numerous forms of Periodic Table have been devised from time to time. Some forms emphasise chemical reactions and valence, whereas others stress the electronic configuration of elements. A modern version the so called long form of the periodic tableof the elements, is the most convenient and widely used.
British chemist, John Newlands had the idea of arranging chemical elements in order of their relative atomic masses and he arranged his elements in columns. However, Russian chemist, Dmitri Mendeleev greatly improved on Newlands' idea and convinced other chemists to use it, so Mendeleev has been credited with the invention of the periodic tbale...but as of today we are still developing some of hte last elements.... from: "http://inventors.about.com/library/inventors/blperiodictable.htm"
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Dmitri Mendeleev created the first periodic table according to atomic mass in 1869. Others before Mendeleev had organized the elements according to their properties and were able to discern periodicity, although Mendeleev is generally accepted as the creator of the table.With the information he gathered about the elements, he was able to see that there were missing elements that hadn't been discovered. He could figure out the atomic masses of the missing elements by averaging the atomic masses of the elements above and below the missing one. One such element, which he called "eka-silicon" (eventually Ge) was missing, but with understanding of the patterns the periodic table made, he predicted the elements appearance, melting point, atomic mass, density, formula of oxide, and formula of chloride.Throughout the years, other scientists were able to find or create these missing elements to form the table we know today. Today's periodic table is ordered by atomic number instead of atomic mass (as Mendeleev had started). Henry Moseley was the first to order the elements by atomic number so elements would fit together in groups/families and periods better in 1913.
Table Table was created in 2008.
A table of logarithms, multiplication table, table salt, Table Mountain.
A Periodic table The Periodic Table of the Elements.
coffee table,dinning room table,kitchen, pool table,card table,glass table
A nested table.
The table can be called a drop leaf table, or a butterfly table. The table can be called a drop leaf table, or a butterfly table.