Atomic Structure Vocabulary

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Across
  1. 1. Each vertical column of the periodic table
  2. 4. Negatively charged subatomic particles
  3. 5. The number of protons in the nucleus of the atom
  4. 6. atoms of the same element that have the sam atomic number but different atomic masses due to a different number of neutrons
  5. 9. Subatomic particles with no charge but with a mass nearly equal to that of a proton
  6. 10. The smallest particle of an element that retains its identity in a chemical reaction
Down
  1. 2. Positively charged subatomic particles
  2. 3. An arrangement of elements in which the elements are separated into groups based on a set of repeating properties
  3. 7. Each horizontal row of the periodic table
  4. 8. number The total number of protons and neutrons in an atom