Periodic classification of elements

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Across
  1. 6. most stable element in the third row.
  2. 7. What happens to the electropositive character of elements on moving from left to right in a periodic table.
  3. 8. An element ‘x’ belongs to groups 2. Find its valency.
  4. 11. other name of group 18th elements.
  5. 12. elements has two shells and both are completely filled.
  6. 13. most reactive element of group seventeenth.
  7. 15. According to Newland’s law of octave ______________is similar to oxygen.
  8. 16. predict whether "K" is metal or non- metal.
Down
  1. 1. The basis of modern Periodic table is.
  2. 2. nature of the oxide of element with atomic number 12.
  3. 3. number of shells in strontium.
  4. 4. on moving from left to right in a periodic table _____ character decreases.
  5. 5. Group 17 elements are called.
  6. 9. non- metallic character _________across a period.
  7. 10. tendency to_______ electrons decreases down the group.
  8. 14. Newland divided elements into horizontal rows of eight element reach State True or False.