Science

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Across
  1. 2. energies that electrons in an atom can have
  2. 3. a neutral subatomic particle that is found in the nucleus of an atom
  3. 6. a dense positively charged mass located in the center of an atom
  4. 7. a positively charged subatomic particle found in the nucleus of an atom
  5. 8. Atoms of the same element that have different numbers of neutrons and different mass numbers
  6. 10. number an element equals the number of protons in an atom of that element
  7. 11. Region of space around the nucleus where an electron is likely to be found
  8. 12. negatively charged subatomic particle found in space outside the nucleus
Down
  1. 1. a visual model of the most likely locations for electrons in an atom
  2. 4. an atom is the sum of the protons and neutrons in the nucleus of that atom
  3. 5. the arrangements of electrons in the orbitals of an atom
  4. 9. When all electrons in an atom have the lowest possible energies