Periodic Table

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Across
  1. 4. Its symbol is H
  2. 7. has the symbol Cn
  3. 9. Its atomic number is 51
  4. 10. has the symbol K Potassium
Down
  1. 1. Its atomic number is 43
  2. 2. 21 element of the periodic table
  3. 3. Its atomic number is 29
  4. 5. Its symbol is Co
  5. 6. has the symbol Ag
  6. 8. Its atomic mass is 23