Periodic Table

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Across
  1. 2. Our body needs this to build and maintain strong bones.
  2. 5. Excellent heat conductivity.
  3. 8. This metal is liquid at room temperature.
  4. 10. My Chemical Symbol is Sr.
Down
  1. 1. I can be found in oysters.
  2. 3. I am soft but strong.
  3. 4. My melting point is 727 °C.
  4. 6. A row in the Periodic Table.
  5. 7. I am one of the alkaline earth metals.
  6. 9. My atomic number is 79.