Ion formation

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Across
  1. 3. charge of an ion with 56p,54e-
  2. 5. number of electrons lost or gained when an atom of Ca forms an ion
  3. 9. name of an element which forms a +2 ion
  4. 11. number of electrons lost or gained when an atom of Na forms an ion
  5. 13. loses 3 electrons to form an ion
  6. 15. name of an element which forms a -1 ion
  7. 16. charge of an ion with 34p,36e-
  8. 17. loses 1 electron to form an ion
  9. 18. number of electrons lost or gained when an atom of S forms an ion
  10. 21. number of electrons lost or gained when an atom of P forms an ion
Down
  1. 1. name of an element which forms a +3 ion
  2. 2. name of an element which forms a +1 ion.
  3. 4. charge of an ion with 11p,10e-
  4. 6. charge of an ion with 13p,10e-
  5. 7. name of an element which forms a -2 ion
  6. 8. name of an element which forms a -3 ion
  7. 10. charge of an ion with 33p,36e-
  8. 12. number of electrons lost or gained when an atom of Br forms an ion
  9. 14. charge of an ion with 53p,54e-
  10. 18. number of electrons lost or gained when an atom of Al forms an ion
  11. 19. loses 2 electrons to form an ion
  12. 20. name of an element which does not form ions