Periodic Table Terms

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Across
  1. 3. A vertical line of elements on the Periodic Table.
  2. 4. The number of protons seen in an element.
  3. 5. A horizontal line of elements on the Periodic Table.
  4. 8. The elements "magnesium" and "calcium" are labeled as this.
  5. 9. The unreactive elements on the Periodic table that have 8 valence electrons.
  6. 10. The total number of neutrons and protons in an element.
Down
  1. 1. These are also called "Rare Earth Metals."
  2. 2. The middle block of elements seen on the Periodic Table that have varying atomic structure.
  3. 6. Have one valence electron and are the most reactive of the metals.
  4. 7. The letter(s) that differentiates the element squares on a Periodic Table.