periodic table

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Across
  1. 1. -no charge.
  2. 3. -negative charge.
  3. 4. -positive charge.
  4. 5. very small compared to the whole atom
  5. 7. -make up portons and neutrons
  6. 8. -atomic mass unit
Down
  1. 2. -where the elctrons are found
  2. 6. -smallest unit of an element.