Across
- 2. Highest ionization energy in period 3
- 7. 1 proton in nucleus
- 8. Highest electronegativity
- 9. Alkali metal in period 2
- 10. Smallest element that forms a -3 charged ion
Down
- 1. Smallest alkaline metal
- 3. Highest metal reactivity
- 4. Halogen in period 3
- 5. 3rd smallest element with 1 valence electron
- 6. 2 shells of electrons and takes 2 electrons to complete its octet
- 7. Smallest atomic Radius