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Comprehensive
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magnesium a highly reactive chemical element of the alkaline-earth group that has twelve protons in each nucleus and that occurs naturally only in compounds, but that can be isolated as a divalent ion essential in plant and animal nutrition, or as alight, ductile, silver-white solid that bursts into a bright flame when heated above room temperature, used for flares, fireworks, and the like. (symbol: Mg)
silver a chemical element that has forty-seven protons in each nucleus and that occurs in pure form as a white, ductile, highly lustrous and reflective metal solid, used esp. in making jewelry, coins, bullion, table utensils, and the like. (symbol: Ag) [1/12 definitions]
tensile able to be stretched, elongated, or extended; ductile. [1/2 definitions]
tractile able to be drawn out or extended; tensile; ductile.
vanadium a chemical element that has twenty-three protons in each nucleus and that occurs in a variety of compounds, or in pure form as a bright white, lustrous, ductile solid metal used in some alloys. (symbol: V)