Periodic Table

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Across
  1. 3. on a square, above the chemical symbol is the
  2. 5. orbital being filled is. On the far right are the
  3. 6. metallic elements are typically
  4. 9. came up with the idea of listing the elements in order of increasing
  5. 11. the element in a group have similar chemical
  6. 12. of heat or electricity
Down
  1. 1. which is on the upper left
  2. 2. of the element and below the symbol are the full name of the element and its
  3. 4. a vertical column of elements is called a[n]
  4. 7. elements had been discovered in the mid-1800s. they did t know about
  5. 8. we now know that s because they have similar valence
  6. 10. mass almos simultaneously,L.