Unit 1 Vocabulary

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Across
  1. 1. Atoms or groups of atoms with a charge.
  2. 4. Negatively charged Ions.
  3. 5. The possible locations around an atom where electrons having specific energy values (quantum number) may be found. Divided into sublevels s, p, d, and f.
  4. 8. If there are two electrons in an orbital, they must have opposite (paired) spins.
  5. 12. Positively charged subatomic particle. Contained inside the nucleus.
  6. 15. When filling sublevels other than s, electrons are placed in individual orbitals before they are paired up.
  7. 16. Horizontal row on the periodic table.
  8. 17. Absorbed when an electron moves from its ground state to its excited state.
  9. 20. the most probable location for finding an electron.
Down
  1. 2. Neutrally charged subatomic particle.
  2. 3. Energy given off in the form of light by an excited electron.
  3. 6. Tendency of an atom to attract electrons to itself when it combines with another element.
  4. 7. Negatively charged subatomic particles.
  5. 9. Depends on the number of energy levels and the overall charge of the nucleus .
  6. 10. Positively Charged Ions.
  7. 11. Atoms of the same element which have a different Mass Number due to a differing number of neutrons.
  8. 13. Principal energy levels are broken down into these...
  9. 14. Identifies an element. The number of protons.
  10. 18. Vertical Column on the periodic table.
  11. 19. The center of an atom. Contains the protons and neutrons.Has an overall positive charge.