boron | englesko - srpski prevod

boron

imenicahemija

Sinonimi: B | atomic number 5

Non-metallic, non-fusible element, found in borax, etc.
Nonmetallic element, symbol B, atomic number 5, relative atomic mass 10.811. In nature it is found only in compounds, as with sodium and oxygen in borax. It exists in two allotropic forms (see allotropy): brown amorphous powder and very hard, brilliant crystals. Its compounds are used in the preparation of boric acid, water softeners, soaps, enamels, glass, and pottery glazes. In alloys it is used to harden steel. Because it absorbs slow neutrons, it is used to make boron carbide control rods for nuclear reactors. It is a necessary trace element in the human diet. The element was named by Humphry Davy, who isolated it 1808, from borax + -on, as in carbon.
A trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder; SYN. B, atomic number 5.

1. bor

muški rodhemija

Hemijski elemenat, ima široku primenu u tehnici i medicini.
Elemenat atomske težine 10,82, redni broj 5, znak B, nemetalno čvrsto telo, netopljivo na poznatim temperaturama; borna kiselina, jedinjenje bora sa kiseonikom (upotrebljava se kod očnih bolesti za obloge).

2. hemijski element

muški rod

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