Periodic Table, Isotopes & Ions

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Across
  1. 4. An ion is an atom that has gained or lost ____.
  2. 7. This element is in group 11, period 5.
  3. 9. To calculate the atomic mass you multiple mass of isotope times its ______
  4. 10. An atom with more protons than electrons is called a ____.
  5. 14. Atoms of the same element with different numbers of neutrons are called ____.
  6. 15. The vertical columns in the periodic table are known as ____.
  7. 16. _____ is a neutral atom with 61 protons.
  8. 18. The particle in the nucleus with no charge is the ____.
  9. 19. The atomic number is the number of ____.
  10. 20. The periodic table organizes elements by increasing _______.
Down
  1. 1. Ions is essentially an unbalanced of _______.
  2. 2. To find the charge of an atom, you ______ the number of electrons from # of protons.
  3. 3. ____ is part of the noble gases.
  4. 5. A neutral atom with 20 protons is _______.
  5. 6. Elements in Group 17 are called the ______.
  6. 8. The horizontal rows in the periodic table are called ____.
  7. 11. The average mass of all the isotopes of an element is called the ____.
  8. 12. _______ play a role in determining the atomic mass of an element.
  9. 13. The mass of an atom is primarily determined by the number of neutrons and ____.
  10. 17. Fluoride has a charge of -1, this type of ion is a ____.