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Prob. 12.4

Prob. 12.4. Table 12.5. METALS. Nonvolatile solids (except Hg) at room temperature Have wide range of m. pts. (e.g., Cs 29 o C; W 3380 o C) Insoluble in water & other common solvents (a) but some react with H 2 O to form H 2 2 Na + 2 H 2 O  2 NaOH + H 2 

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Prob. 12.4

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  1. Prob. 12.4

  2. Table 12.5

  3. METALS Nonvolatile solids (except Hg) at room temperature Have wide range of m. pts. (e.g., Cs 29oC; W 3380oC) Insoluble in water & other common solvents (a) but some react with H2O to form H2 2 Na + 2 H2O  2 NaOH + H2 2 K + 2 H2O  2 KOH + H2 2 Gr 1 metal + 2 H2O  2 MOH + H2 (b) some, such as Au & Ag, dissolve in liquid Hg to make amalgams

  4. Metals • Ductility of metals results from nondirectionality of metallic bond. Metals atoms therefore arrange themselves to achieve most efficient packing & densest structure. Such metals will be either: a. fcc (Al, Cu, Au) b. Hcp (Mg, Zn, Ti)

  5. Conductivity/Resistivity in Metals & Solids • Insulators a. Gases b. Most solid ionic compounds c. Almost all organic compounds d. All molecular liquids e. All molecular & network solids (except graphite) • Metallic conductors a. All metals b. Certain solids

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