Periodic Trends
Across
- 3. Forms a cation with a charge of -3 and is used to help package materials and food.
- 5. Its a metal with a low melting point and high chemical reactivity. A cation with a smaller ionic radius than its nutrient neighbor.
- 8. Has no electronegativity and the highest mass of the elements here.
- 10. A cation, when it looses its valence electrons it has three orbitals. It and its neighbor are important nutrients for the human body,
- 13. With 6 valence electrons, this diatomic element is breathed in every second.
- 14. An element with a charge of -2 and is located in the 3p orbital.
- 15. neither gains or loses electrons, is the building block of all organic compounds, atomic radius is smaller than Aluminim but larger than Helium
- 17. In the 1s¹, Non metal
- 18. forms neither a cation or anion naturally, and is one of the only metalloids here.
Down
- 1. has an average atomic mass of 9.012, Has 4 protons, 5 neutrons and 4 electrons
- 2. Used for batteries, 1 valence electron, metal
- 4. Highest 1st ionization energy, used to blow up balloons
- 6. Is a non-metal that forms an anion with a charge of +3 and has an average mass of 30.97.
- 7. Regardless of its high 1st ionization energy, its low electronegativity makes it virtually unreactive, but if energized it creates a unique glow.
- 9. This element has its own unique biochemical cycle! It also has high 1st ionization energy and electronegativety.
- 11. With the highest electronegativity this reactive element is used to produce uranium
- 12. Is an element with 7 valence electrons and is frequently used to treat water for us to drink and swim in.
- 16. has a charge of +3, forms a cation,in the 2nd period