Periodic Table and Bonding

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Across
  1. 4. FORCE Holds nucleus together
  2. 5. Nuclear joining process
  3. 9. NO. Total nucleons in atom
  4. 10. Neutral particle in nucleus
  5. 15. Periodic table founder
  6. 17. Dense center of atom
  7. 18. TABLE Chart listing all elements
  8. 19. Emits particles or energy
  9. 20. Positively charged particle
  10. 21. NO. Number of protons in atom
  11. 23. Force linking atoms
  12. 24. Elements in vertical columns
  13. 25. Shared electron bond
  14. 28. Electron’s probable location
  15. 29. Force acting on charged particles
Down
  1. 1. Nuclear splitting process
  2. 2. Charged atom or molecule
  3. 3. Nearly massless particle
  4. 6. Outer shell electrons
  5. 7. Building block of matter
  6. 8. CHARGE Balanced positive and negative
  7. 11. Negative charge carrier
  8. 12. Electron energy level ring
  9. 13. Horizontal rows in table
  10. 14. Noble gas with two protons
  11. 16. Electron at higher energy
  12. 22. Same element, different neutrons
  13. 26. Elementary light particle
  14. 27. Electron transfer bond
  15. 30. Atomic mass measurement