Perfect 10

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Across
  1. 6. the number of protons in the nucleus of an atom
  2. 7. substance which does not
  3. 10. group 1 and 2
  4. 11. an element whose properties are intermediate between metals
Down
  1. 1. able to be deformed without losing toughness
  2. 2. soft and easy to break
  3. 3. an element of substances that is not a metal
  4. 4. the quality of power
  5. 5. easy influenced
  6. 8. a element
  7. 9. layout of all the chemical elements