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Ionic Solids Characteristics

Conductivity. Yes. No. In the molten or aqueous phase. In the solid phase. Ionic Solids Characteristics. Formed from a bond between a metal and nonmetal. Ionic Solids. Strong Electrostatic Attractions. Rigid crystalline structure. Relatively High

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Ionic Solids Characteristics

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  1. Conductivity Yes No In the molten or aqueous phase In the solid phase Ionic Solids Characteristics Formed from a bond between a metal and nonmetal Ionic Solids Strong Electrostatic Attractions Rigid crystalline structure Relatively High Melting Point Hard, brittle solids

  2. The First Couple • # 1) Energy is released when bonds are formed. Energy is absorbed when bonds are broken. • #2) As a bond forms the PE decreases. • #3) Energy is released -> stability increases • #4) Two atoms combine to form a molecule, bond formed, energy is released

  3. H H H H #5 Which electron-dot diagram represents H2? Both hydrogen’s will equally share their valence electron

  4. #9) In which compound do the atoms have the greatest difference in electronegativity? • NaBr |0.9 – 3.0| = 2.1 • KF |0.8 – 4.0| = 3.2 • AlCl3 |1.6 – 3.2| = 1.6 • LiI |1.0 – 2.7| = 1.7

  5. #13) Given the reaction: M + 2H2O -> M(OH)2 + H2The metal represented by M is most likely a metal from Group The subscript of 2 on the hydroxide came from the charge on the metal (M). M(OH)2 M+2(OH)-1 So the Metal (M) must be from Group 2 because of its +2 oxidation state!

  6. #16) Element X has an electron configuration of 2-8-3. This element will combine with the phosphate ion to form a compound with the formula 3 Valence e-’s means that is will have an oxidation state of +3 X+3(PO4)-3 From Table E: phosphate has a -3 Criss Cross w/out charges X3(PO4)3 3 3 Reduce to Lowest Ratio X(PO4)

  7. H H H H #33 a. b. c. H2 is nonpolar and H2O is polar, like dissolves like, therefore H2 will not dissolve in H2O. 1Mg +1H2SO41H2+1MgSO4

  8. #34 + H N H H a. b. N H H H H

  9. #35 H Cl a. b. c. H-Cl is polar, water is polar; like dissolves like H Cl +

  10. #36 N N a. OR b. N2 is very stable, unreactive because of triple bond (a lot of energy was released when this bond was formed). N N

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