Periodic Table Review

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Across
  1. 2. One valence electron and 2 orbitals.
  2. 8. A gas that makes up most of the air we breathe, with 5 outer electrons
  3. 9. Element commonly associated with a terrible smell.
  4. 11. Most massive element in our selection.
  5. 13. neutral charge and a mass of 12.01
  6. 15. The most electronegative element.
  7. 16. Only element touching the stair-step line that is not a metalloid.
  8. 17. This metal has a higher ionization energy than sodium, due to one more proton.
Down
  1. 1. A soft metal that reacts quickly with water, and often forms part of table salt.
  2. 3. This element has 1 valence electron and one proton.
  3. 4. A key element in DNA
  4. 5. It has 4 valence electrons, and a neutral mass of 28.
  5. 6. Two valence electrons and 2 orbitals.
  6. 7. Prevalent chemical in swimming pools
  7. 8. A colorless, inert gas in light up signs.
  8. 10. A gas we breathe, usually gains 2 electrons in reactions.
  9. 12. This element has no charge and the highest ionization energy.
  10. 14. 5 protons and part of the boron family