Atomic Number

123456789101112
Across
  1. 1. number of protons in lithium
  2. 2. contains 12 protons
  3. 5. number of neutrons in lithium
  4. 7. contains 1 proton
  5. 8. number of protons in calcium
  6. 9. same number of protons and neutrons in nitrogen
  7. 12. number of protons in potassium
Down
  1. 1. number of neutrons in sodium
  2. 3. number of electrons in chlorine
  3. 4. contains 6 protons and neutrons
  4. 6. contains 8 protons and neutrons
  5. 10. number of protons in neon
  6. 11. contains 1 proton and 1 neutron