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Lead (/ l ɛ d /) is a chemical element; it has symbol Pb (from Latin plumbum) and atomic number 82. It is a heavy metal that is denser than most common materials. Lead is soft and malleable, and also has a relatively low melting point. When freshly cut, lead is a shiny gray with a hint of blue. It tarnishes to a dull gray color when exposed to ...
Lead telluride is a compound of lead and tellurium (PbTe). It crystallizes in the NaCl crystal structure with Pb atoms occupying the cation and Te forming the anionic lattice. It is a narrow gap semiconductor with a band gap of 0.32 eV. [4] It occurs naturally as the mineral altaite.
Crystal structure of ... as for example impurities in semiconducting ferromagnetic alloys may lead to different properties ... in chains, double chains, sheets, and ...
in grey metallic form, each As atom has 3 neighbours in the same sheet at 251.7pm; 3 in adjacent sheet at 312.0 pm. [18] each Bi atom has 3 neighbours in the same sheet at 307.2 pm; 3 in adjacent sheet at 352.9 pm. [18] each Sb atom has 3 neighbours in the same sheet at 290.8pm; 3 in adjacent sheet at 335.5 pm. [18] puckered sheet α-Sm (none ...
Cut glass wine glass made of lead glass. Lead glass, commonly called crystal, is a variety of glass in which lead replaces the calcium content of a typical potash glass. [1] Lead glass contains typically 18–40% (by mass) lead(II) oxide (PbO), while modern lead crystal, historically also known as flint glass due to the original silica source, contains a minimum of 24% PbO. [2]
The amorphous structure of ... producing high-quality distortion-free flat sheets of glass by ... Crystal or Lead crystal glass may be cut and polished to ...
The crystal structure of anhydrous lead(II) acetate has been described as a 2D coordination polymer. In comparison, lead(II) acetate trihydrate 's structure is a 1D coordination polymer. [ 8 ] In the trihydrate, the Pb 2+ ion's coordination sphere consists of nine oxygen atoms belonging to three water molecules, two bidentate acetate groups and ...
Molecular structure Point group? Coordination geometry? Bond strength? Bond length? Bond angle? Crystal data Crystal system: Orthorhombic: Space group: Pnmb Z 4 a: 435.5 pm b: 762 pm c: 905 pm Unit cell volume: 312.74 Å 3: Properties Dipole moment? D: Index of refraction? Dielectric constant? ε 0 at ? °C Magnetic susceptibility?