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Periodic Table

Periodic Table. Evan Luton Web Elements. Uranium. Atomic symbol is U Atomic number is 92 Atomic mass is 238.02 Half life of Uranium-238 is 4.47 billion years Uranium gives interesting yellow and green colors and fluorescence effects when included to glass. Neon.

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Periodic Table

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  1. Periodic Table Evan Luton Web Elements

  2. Uranium • Atomic symbol is U • Atomic number is 92 • Atomic mass is 238.02 • Half life of Uranium-238 is 4.47 billion years • Uranium gives interesting yellow and green colors and fluorescence effects when included to glass.

  3. Neon • Obtained as a byproduct from the liquefaction and separation of air • Discoveredby Sir William Ramsay and Morris Travers in 1898 • Discovered shortly after krypton

  4. Iron • Iron filings salts cause sparks in flames • Smelted iron artifacts have been identified from around 3000 B.C. • Iron is a relatively abundant element in the universe • It is found in the sun and many types of stars in considerable quantity

  5. Zinc • Zinc-deficient animals require 50% more food to gain the same weight of an animal supplied with normal amounts of zinc • Plating thin layers of zinc on to iron or steel is known as galvanizing and helps to protect the iron from corrosion • Zinc is a bluish-white, lustrous metal

  6. Radium • Emits α(alpha) β (beta)and γ (gamma) rays • Pure metallic radium is brilliant white when freshly prepared, but blackens on exposure to air • Radium conveys a carmine red color to a flame

  7. Xenon • Xenon is a "noble" gas present in the atmosphere • Xenon is present in the Martian atmosphere • Before 1962, it was generally assumed that xenon and other noble gases were unable to form compounds

  8. Vanadium • Pure vanadium is a greyish silvery metal, and is soft and spongy • Industrially, most vanadium produced is used as an additive to improve steels • The discovery of vanadium happened "twice".

  9. Manganese • Manganese metal is gray-white, resembling iron, but is harder • The metal is reactive chemically, and decomposes cold water slowly • Manganese is widely distributed throughout the animal kingdom • Manganese is present in quantity the floor of oceans

  10. Iridium • Ruthenium, rhodium, palladium, osmium, iridium, and platinum together make up a group of elements referred to as the platinum group metals • The name iridium is appropriate, for its salts are highly colored • Iridium is white, similar to platinum, but with a slight yellowish cast

  11. Yttrium • Yttrium has a silvery-metallic luster • Yttrium turnings ignite in air • Yttrium is found in most rare-earth minerals • Moon rocks contain yttrium and yttrium is used as a "phosphor" to produce the red color in television screens

  12. Argon • Argon is a colorless and odorless gas present to a very small extent in the atmosphere • Argon is very inert and is not known to form true chemical compounds • It makes a good atmosphere for working with air-sensitive materials since it is heavier than air

  13. Caesium • Caesium is known as cesium in the USA • It is silvery gold, soft, and ductile • It is the most electropositive and most alkaline element • Caesium, gallium, and mercury are the only three metals that are liquid at or around room temperature

  14. Titanium • Titanium is a lustrous, white metal when pure • Titanium minerals are quite common • The metal has a low density, good strength, is easily fabricated, and has excellent corrosion resistance • The metal burns in air and is the only element that burns in nitrogen

  15. Nitrogen • Nitrogen makes up about 78% of the atmosphere • The atmosphere of Mars contains less than 3% nitrogen • When nitrogen is heated, it combines directly with magnesium, lithium, or calcium

  16. Ytterbium • Ytterbium has a bright silvery luster, is soft, malleable, and spongy • While itis fairly stable, it should be kept in closed containers to protect it from air and moisture • Ytterbium is readily attacked and dissolved by mineral acids and reacts slowly with water

  17. Barium • Barium is a metallic element, soft, and when pure is silvery white like lead • The metal oxidizes very easily and it reacts with water or alcohol • Barium is one of the alkaline-earth metals • Small amounts of barium compounds are used in paints and glasses

  18. Helium • Helium is one of the noble gases • Helium gas is an unreactive, colorless, and odorless monoatomic gas • Helium is the second most abundant element in the universe after hydrogen • Helium is used in lighter than air balloons and while heavier than hydrogen, is far safer since helium does not burn

  19. Tantalum • Tantalum is a greyish silver, heavy, and very hard metal • When pure, it is elastic and can be drawn into fine wire • Tantalum is almost completely immune to chemical attack at temperatures below 150°C • The element has a melting point exceeded only by tungsten and rhenium.

  20. Bohrium • Bohrium is a synthetic element that is not present in the environment at all • The German discoverers at GSI proposed the name Nielsbohrium • IUPAC is happy to name an element after Bohr but suggest bohrium on the grounds that the first name of a person does not appear in the names of any other element named after a person

  21. Gold • Most metals are metallic grey or silvery white whereas gold is characteristically a metallic yellow color, in other words gold-colored • Small amounts of other metals alloyed with gold change the color as well as mechanical properties such as hardnes • White gold for jewelry is formed by mixing palladium, silver, or nickel with gold, although the result is green gold with certain proportions of silvers

  22. Potassium • Potassium is a metal and is the seventh most abundant and makes up about 1.5 % by weight of the earth's crust • Potassium is an essential constituent for plant growth and it is found in most soils • It is also a vital element in the human diet • Potassium is never found free in nature, but is obtained by electrolysis of the chloride

  23. Nobelium • Nobelium is a radioactive "rare earth metal" named after Alfred Nobel who discovered dynamite • A team working in Stockholm reported in 1957 an isotope whose atomic number is 102 • An authenticated discovery of nobelium was made in 1958 by Seaborg and others at Berkeley, California, USA

  24. Tungsten • Pure tungsten is a steel-gray to tin-white metal • Tungsten has the highest melting point and lowest vapor pressure of all metals, and at temperatures over 1650°C has the highest tensile strength • The metal oxidizes in air and must be protected at elevated temperatures

  25. Beryllium • It is a metal and has a high melting point • At ordinary temperatures, beryllium resists oxidation in air • Beryllium compounds are very toxic • Its ability to scratch glass is probably due to the formation of a thin layer of the oxide • Its chemistry is dominated by its tendency to lose an electron

  26. Platinum • Ruthenium, rhodium, palladium, osmium, iridium, and platinum together make up a group of elements referred to as the platinum group metals • Platinum is a silvery-white metal, when pure, and is soft and flexible • Hydrogen and oxygen gas mixtures explode in the presence of platinum wire

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