Across
- 4. The charge of neutrons
- 7. Proton number identifier of elements
- 8. Number of electrons in a neutral atom of Lithium
- 10. Mass of the nucleus (protons + neutrons)
- 13. The number of capital letters in an element symbol
- 14. The charge of protons
- 16. Atoms of an element with different mass numbers
Down
- 1. Positive element-identifying insiders
- 2. Atomic Number 13
- 3. The charge of electrons
- 5. Atoms with a positive (+) or negative (-) charge
- 6. Neutral Mass Number-contributing insiders
- 9. Table where all elements are listed
- 11. The inside and mass-containing part of an atom
- 12. Negative and energetic outsiders
- 15. Atomic Number for Helium
- 17. The number of protons to electrons in neutral atoms