Your Ad Here Your Ad Here
Results 1 to 10 of 10

Thread: Periodic Table

  1. #1
    BERYLLIUM

    2) Can your element be found in its pure elemental form in nature or is it so reactive that it is only found in compounds? Explain how your element is extracted from nature?

    5) List and describe some important compounds taht your element forms.

  2. Lounge   -   #2
    Need help with homework?

  3. Lounge   -   #3
    Research Project

    just 2 questions i cant find answers to

  4. Lounge   -   #4
    Double Agent
    Join Date
    May 2003
    Posts
    3,603
    Beryllium, symbol Be, gray, brittle metallic element, with an atomic number of 4. It is in group 2 (or IIa) of the periodic table (see Periodic Law). Beryllium was named for its chief mineral, beryl, an aluminum beryllium silicate. It was discovered as an oxide, now known as beryllia, in 1797 by French chemist Louis Nicolas Vauquelin. The free element was first isolated in 1828 independently by Friedrich Wöhler and Antonine Alexandre Brutus Bussy. Because the soluble compounds are sweet-tasting, the new element was first called glucinium, a reference to the sugar glucose.

    Beryllium, one of the alkaline earth metals, ranks about 51st in natural abundance among the elements in the earth's crust. Its atomic weight is 9.012. Beryllium melts at about 1287° C (about 2349° F), boils at about 3000° C (about 5432° F), and has a specific gravity of 1.85. Beryllium has a high strength per unit weight. It tarnishes only slightly in air, becoming covered with a thin layer of oxide. The ability of beryllium to scratch glass is usually ascribed to this oxide coating. Beryllium compounds are generally white (or colorless in solution) and show great similarity in chemical properties to the corresponding compounds of aluminum. This similarity makes it difficult to separate beryllium from the aluminum that is almost always present in beryllium ores.

    The addition of beryllium to some alloys often results in products that have high heat resistance, improved corrosion resistance, greater hardness, greater insulating properties, and better casting qualities. Many parts of supersonic aircraft are made of beryllium alloys because of their lightness, stiffness, and dimensional stability. Other applications make use of the nonmagnetic and nonsparking qualities of beryllium and the ability of the metal to conduct electricity. Beryllium has important use in so-called multiplexing systems. In miniature, high-purity components made with beryllium, a single wire can carry hundreds of electronic signals.

    Because X rays easily pass through pure beryllium, the element is used as window material for X-ray tubes. Beryllium and its oxide, beryllia, are also used as a moderator, or so-called blanket, around the core of a nuclear reactor because of the tendency of beryllium to slow down or capture neutrons (see Nuclear Energy).

    Although beryllium products are safe to use and handle, the fumes and dust released during fabrication are highly toxic. Extreme care must be taken to avoid breathing or ingesting even very small amounts. Specially designed exhaust hoods are used by persons working with beryllium oxide.

    Beryllium and its oxide are being utilized more and more in industry. Besides its importance in aircraft and X-ray tubes, beryllium is used in computers, lasers, televisions, oceanographic instruments, and personal body armor.






    Beryllium 4
    Be
    9.012182(3)

    The essentials
    Name: beryllium
    Symbol: Be
    Atomic number: 4
    Atomic weight: 9.012182 (3)
    CAS Registry ID: 7440-41-7
    Group number: 2
    Group name: Alkaline earth metal
    Period number: 2
    Block: s-block


    Description
    Here is a brief description of beryllium.

    Standard state: solid at 298 K
    Colour: lead grey
    Classification: Metallic
    Availability: beryllium is available in several forms including foil, lump, and powder. Small and large samples of beryllium foil can be purchased from Advent Research Materialsvia their web catalogue.
    Beryllium is a Group 2 (IIA) element. At ordinary temperatures, beryllium resists oxidation in air. Its ability to scratch glass is probably due to the formation of a thin layer of the oxide. Aquamarine and emerald are precious forms of the mineral beryl, [Be3Al2(SiO3)6].


    This sample is from The Elements Collection

    , an attractive and safely packaged collection of the 92 naturally occurring elements that is available for sale.

    Isolation
    Here is a brief summary of the isolation of beryllium.
    Beryllium metal is available commercially and so would never normally be made in the laboratory. Its extraction from ores is complex. The mineral beryl, [Be3Al2(SiO3)6] is the most important source of beryllium. It is roasted with sodimu hexafluorosilicate, Na2SiF6, at 700°C to form beryllium fluoride. This is water soluble and the beryllium may be precipitated as the hydroxide Be(OH)2 by adjustment of the pH to 12.

    Pure beryllium may be obtained by electrolysis of molten BeCl2 containing some NaCl. The salt is added since the molten BeCl2 conducts very poorly. Another method involves the reduction of beryllium fluoride with magnesium at 1300°C.

    BeF2 + Mg MgF2 + Be

  5. Lounge   -   #5
    Rat Faced's Avatar Broken
    Join Date
    Aug 2002
    Location
    Newcasil
    Age
    52
    Posts
    9,076
    Beryllium Compounds ....They're listed at the bottom of the page

    Berlyllium Mining etc........ Inc where found in the world.

    An It Harm None, Do What You Will

  6. Lounge   -   #6
    Doesnt the bottom where the char is only tell the physical composition

  7. Lounge   -   #7
    Rat Faced's Avatar Broken
    Join Date
    Aug 2002
    Location
    Newcasil
    Age
    52
    Posts
    9,076
    Sorry...........look under "Physical Properties"

    ......forgot about all those graphs etc. that come after

    Physical Properties
    The chemical symbol for pure beryllium is Be, and its atomic weight is 9.012 g/mol. (1)
    Pure beryllium is a hard gray metal that does not occur naturally but does occur as a chemical component of certain kinds of rocks, coal and oil, soil, and volcanic dust. (1)
    Beryllium is also present in a variety of compounds such as beryllium fluoride, beryllium chloride, beryllium sulfate, beryllium oxide, and beryllium phosphate. (1)
    Pure beryllium is insoluble in water; however, some of its compounds are soluble in water. (1)

    An It Harm None, Do What You Will

  8. Lounge   -   #8
    Poster
    Join Date
    Aug 2003
    Location
    Burmoda triangle, right behind you!
    Posts
    571
    James bond rulez is PLIAGIARISING (can't spell) lol
    Click the longhorn icon to visit my website.
    <span style='color:blue'><span style='font-size:8pt;line-height:100%'> You try Everything in my/our post(s) at YOUR own risk. I/we do not take responsibily for damages, caused by the post(s). Clicking on/or modifying anything in here is not permitted. Whoever edits my sig is a pussy.</span></span>

    ::::::::::::::::::::::::::::::::::::::::

  9. Lounge   -   #9
    Double Agent
    Join Date
    May 2003
    Posts
    3,603
    Originally posted by supersonic@11 October 2003 - 21:17
    James bond rulez is PLIAGIARISING (can&#39;t spell) lol
    shut up i am helping out

  10. Lounge   -   #10
    Poster
    Join Date
    Jun 2003
    Location
    San Diego, CA USA
    Posts
    404
    Those alkali and alkali earth metals are pretty much never found in a pure form in nature because they are so reactive, although Be isn&#39;t as reactive as the rest

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •