Chemical bonding

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Across
  1. 3. Used in computer ships manufacture beside germanium
  2. 6. Force that result due to sharing pair of electrons
  3. 8. when atom loses or gains electrons
  4. 10. kept under oil surface because its very reactive
  5. 11. Elements arranged in vertical column in periodic table
Down
  1. 1. Force that result when reacting atoms lose and gain electrons during chemical reaction
  2. 2. Number of outermost energy level electrons lost or gained during chemical reaction
  3. 4. tend to lose electrons during chemical reaction
  4. 5. tend to gain electrons during chemical reaction
  5. 7. said to be neutral
  6. 9. Horizontal raw in periodic table