Across
- 1. I am not an alkali metal, but I am in group 1.
- 3. My atomic number is 47.
- 6. I have 28 electrons when electrically neutral.
- 9. I am a metalloid that usually has 71 neutrons.
- 11. Eat me when you have cramps in your legs.
- 14. my average atomic mass is 35.453
- 16. I am the 2nd most reactive metal.
Down
- 2. I am a gas with 8 neutrons in my most common form.
- 4. I have 26 protons.
- 5. I'm the only noble gas with 2 electrons.
- 7. I am in the fifth period and the carbon family.
- 8. I'm an alkaline earth metal used in fireworks.
- 10. I am very important for healthy teeth and bones
- 12. I have 6 valence electrons and 16 protons.
- 13. I am the only liquid metal at room temperature
- 15. I am a halogen with 5 energy levels.