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Metalloid: An element with both metallic and nonmetallic properties. Examples are silicon, arsenic, and germanium.

Silicon (Si): Atomic number: 14, Atomic mass: 28.0855 g.mol -1, Electronegativity: 1.8, Density: 2.33 g.cm -3 at 20 °C, Melting point: 1410 °C, Boiling point: 3265 °C, Vanderwaals radius: 0.132 nm, Ionic . . . View Full Definition

Germanium (Ge): Atomic number: 32, Atomic mass: 72.59 g.mol -1, Electronegativity: 1.8, Density: 5.3 g.cm-3 at 20°C, Melting point: 937 °C, Boiling point: 2830 °C, Vanderwaals radius: 0.137 nm, Ionic radius . . . View Full Definition