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gallium    音標拼音: [g'æliəm]
n. 鎵

鎵

gallium
n 1: a rare silvery (usually trivalent) metallic element;
brittle at low temperatures but liquid above room
temperature; occurs in trace amounts in bauxite and zinc
ores [synonym: {gallium}, {Ga}, {atomic number 31}]

Gallium \Gal"li*um\, n. [NL.; perh. fr. L. Gallia France.]
(Chem.)
A rare metallic element, found combined in certain zinc ores.
It is white, hard, and malleable, resembling aluminium, and
remarkable for its low melting point (86[deg] F., 30[deg]
C.). Symbol, Ga; at. wt., 69.9. Gallium is chiefly trivalent,
resembling aluminium and indium. It was predicted with most
of its properties, under the name eka-aluminium, by the
Russian chemist Mendelyeev on the basis of the periodic law.
This prediction was verified in its discovery (in 1875) by
the French chemist Lecoq de Boisbaudran by its characteristic
spectrum (two violet lines), in an examination of a zinc
blende from the Pyrenees.
[Webster 1913 Suppl.]


Ekaluminium \Ek*al`u*min"i*um\, n. [Skr. [=e]ka one E.
aluminium.] (Chem.)
The name given by Mendeleev to a hypothetical element, --
later discovered and called {gallium}. See {Gallium}, and cf.
{Ekabor}. Also see {periodic table}.
[1913 Webster PJC]

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  • Gallium - Wikipedia
    Gallium is a chemical element; it has symbol Ga and atomic number 31 Discovered by the French chemist Paul-Émile Lecoq de Boisbaudran in Paris, France, 1875, elemental gallium is a soft, silvery metal at standard temperature and pressure In its liquid state, it becomes silvery white
  • Gallium | History, Uses, Properties, Oxidation States, Compounds . . .
    Gallium is a chemical element of Group 13 (the boron group) of the periodic table It liquefies just above room temperature Gallium compounds, some of which form the basis for light-emitting diodes (LEDs), have valuable semiconductor and optoelectronic properties
  • Gallium FAQs: What It Is, What It Does Why It Matters
    Discover answers to the most common questions about gallium: its properties, uses, risks, history, and why it's a strategic metal with rising global demand
  • Critical minerals (Part 5): Gallium – the hidden metal . . . - Deposits
    Gallium compounds such as gallium nitride (GaN) and gallium arsenide (GaAs) are critical for semiconductors, and they are also what make LEDs, 5G networks, radar systems, solar cells and advanced defence electronics possible
  • Amazon. com: Gallium
    Explore gallium in various quantities from trusted brands Ideal for DIY experiments and scientific exploration
  • Gallium: Element Properties and Uses - samaterials. com
    Gallium is a chemical element with the symbol Ga and atomic number 31 It is a soft, silvery metal known for its unique properties and wide range of applications in various industries
  • U. S. Discovers Major Deposit Of Gallium, A Metal China . . . - HuffPost
    China controls 98% of the world’s production of gallium, a soft, silvery metal used to make semiconductors, LED screens, and solar panels — and a key ingredient in next-generation weapons
  • Gallium Element Facts - Science Notes and Projects
    Gallium is a chemical element with atomic number 31 and element symbol Ga It is considered to be a post-transition metal or basic metal Gallium is known for its low melting point, which lends itself to the gallium spoon demonstration and even melting the pure metal in your hand
  • Gallium - Element information, properties and uses | Periodic Table
    Gallium readily alloys with most metals It is particularly used in low-melting alloys It has a high boiling point, which makes it ideal for recording temperatures that would vaporise a thermometer Gallium has no known biological role It is non-toxic
  • Solving the US militarys gallium dilemma - Atlantic Council
    Gallium has an outsized yet overlooked strategic value Embedded in radars, missile seekers, secure radio frequency links, and satellite solar cells, this obscure metal is crucial for advanced electronic warfare systems





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