| Gallium (gallium) |
|---|
| n. | (?) |
|---|
| Gal"li*um |
| [NL., fr. L.
Gallia France.] (Chem.) |
A rare metallic element,
found in certain zinc ores. It is white, hard, and malleable,
resembling aluminium, and remarkable for its low melting point
(86° F., 30° C). Symbol Ga. Atomic weight 69.9.
|
| Gallium (gallium) |
|---|
| n. | (?) |
|---|
| Gal"li*um |
| [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° F., 30° 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
Mendelyeev on the basis of the periodic law. This prediction was
verified in its discovery (in 1875) by its characteristic spectrum
(two violet lines).
|
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In celebration of Noah Webster's Birthday (October 16, 2009), we have prepared an updated website. 