Lucky

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Across
  1. 2. Table- an arrangement of the elements in order of their atomic numbers such that elements with similar properties fall in the same group.
  2. 4. Number- the number of protons in the nucleus of an atom.
  3. 6. negatively charged particles found within the electron cloud.
  4. 7. positively charged particles found in the nucleus.
  5. 8. the smallest particle into which an element can be divided.
Down
  1. 1. uncharged particles that are found within the nucleus of an atom.
  2. 3. the center of an atom made up of protons and neutrons.
  3. 5. Number- the sum of the number of protons and neutrons in the nucleus of an atom.
  4. 6. Cloud- a region around the nucleus of an atom where electrons are likely to be found.