Atoms in Periodic Table

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Across
  1. 2. the horizontal rows of the periodic table
  2. 3. an element that readily forms positive ions and has metallic bonds
  3. 5. an element whose properties are intermediate between those metals and solid metals
  4. 7. able to be hammered or pressed permanently out of shape without breaking
  5. 8. levels the fixed amount of energy that a system described by quantum mechanics
  6. 9. able to be deformed without losing toughness
  7. 11. an element or substance that is not a metal
  8. 13. the membrane-enclosed organelle within a cell that contains the chromosomes
  9. 15. the vertical columns on the periodic table that have similar chemical properties
  10. 16. Cloud the system of electrons surrounding the nucleus of an atom
Down
  1. 1. a stable subatomic particle occurring in all atomic nuclei with a positive electric charge
  2. 4. Electrons a negatively charged particle located in the outermost shell of an atom
  3. 6. a stable subatomic particle with a charge of negative electricity
  4. 10. a subatomic particle of about the same mass as a proton but without an electric charge
  5. 12. a particle of matter that uniquely defines a chemical element
  6. 14. a gentle sheen or soft glow, especially that of a partly reflective surface