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tetrahedral bead - traduction vers russe
Inverted tetrahedral geometry; Tetrahedral geometry; Tetrahedral complex ion; Tetahedral molecular geometry; Tetrahedral coordination geometry; Examples of tetrahedral structures; Tetrahedral molecule; Tetrahedrally; Tetrahedral complex
![Ga2Cl6}} ("[[gallium trichloride]]").](https://commons.wikimedia.org/wiki/Special:FilePath/Gallium-trichloride-from-xtal-2004-3D-balls.png?width=200 "Ga2Cl6}} (\"[[gallium trichloride]]\").")
![<!-- specify width as minus sign vanishes at most sizes --> Calculating bond angles of a symmetrical tetrahedral molecule using a [[dot product]]](https://commons.wikimedia.org/wiki/Special:FilePath/Tetrahedral angle calculation.svg?width=200 "<!-- specify width as minus sign vanishes at most sizes --> Calculating bond angles of a symmetrical tetrahedral molecule using a [[dot product]]")
tetrahedral bead
математика
тетраэдральная бусина
beads
![[[Merovingian]] bead](https://commons.wikimedia.org/wiki/Special:FilePath/Perle Verre Epoque mérovingienne Metz 29012017.jpg?width=200 "[[Merovingian]] bead")
![Gallic]], stone](https://commons.wikimedia.org/wiki/Special:FilePath/Pierre pendentif gauloise bijou.jpg?width=200 "Gallic]], stone")
![Bead, depicting a pomegranate]], dated to the [[Assyrian Empire]] of the 8th century BCE.](https://commons.wikimedia.org/wiki/Special:FilePath/Pomegranate carved in the round MET DP110584.jpg?width=200 "Bead, depicting a pomegranate]], dated to the [[Assyrian Empire]] of the 8th century BCE.")
SMALL DECORATIVE OBJECT WITH DRILLED HOLE
Beads; Decorative Bead; Decorative bead; Big hole bead; Draft:Iron-on beads
bead
SMALL DECORATIVE OBJECT WITH DRILLED HOLE
Beads; Decorative Bead; Decorative bead; Big hole bead; Draft:Iron-on beads
bead 1. noun 1) шарик, бусина; бисерина 2) pl. бусы; бисер 3) pl.; eccl. четки - tell beads 4) капля 5) пузырек (воздуха) 6) mil. прицел, мушка - draw bead on 7) tech. борт, отогнутый край, заплечик, реборда, буртик 8) archit. капельки (украшение по краю фронтона) - pray without one's beads 2. v. 1) нанизывать (бусы) the houses are beaded along the river - дома тесно стоят (букв. нанизаны как бусы) вдоль реки 2) украшать бусами 3) вышивать бисером 4) obs. читать молитвы 5) tech. отгибать борт; расчеканивать
Wikipédia
Tetrahedral molecular geometry
In a tetrahedral molecular geometry, a central atom is located at the center with four substituents that are located at the corners of a tetrahedron. The bond angles are cos−1(−1⁄3) = 109.4712206...° ≈ 109.5° when all four substituents are the same, as in methane (CH4) as well as its heavier analogues. Methane and other perfectly symmetrical tetrahedral molecules belong to point group Td, but most tetrahedral molecules have lower symmetry. Tetrahedral molecules can be chiral.
