Metals and non metals

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Across
  1. 4. reactive metal displace the less reactive metal from it's salt solution
  2. 5. is the least reactive metal
  3. 7. is corrosion of iron
  4. 8. oxides are acidic in nature
  5. 9. colored layer formed from corrosion of silver
Down
  1. 1. is the full name of H2O
  2. 2. oxides are basic in nature
  3. 3. reacts with water vigorously
  4. 6. reacts with oxygen and produce metallic oxide