Business / Machine Shop / Metallurgy: The science explaining the properties, behavior and internal structure of metals.
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Science / Periodic Table of Elements / 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 radi MORE
Science / Periodic Table of Elements / Chromium (Cr): Atomic number: 24, Atomic mass: 51.996 g.mol -1, Electronegativity: 1.6, Density: 7.19 g.cm-3 at 20?°C, Melting point: 1907 ?°C, Boiling point: 2672 ?°C, Vanderwaals radius: 0.127 nm, Ionic radius: MORE
Entertainment / Literature / Polygenesis: The theory that, if two similar stories, words, or images appear in two different geographic regions or languages, they are actually unrelated to each other. Each one arose independently. For an analo MORE