Periodic Table Assignment

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Across
  1. 5. Element 101 was named in his honor
  2. 7. This law states that the properties of elements repeat as a function of their atomic number
  3. 10. The state of matter represented by (aq)
  4. 11. When aluminum combines with oxygen; three oxygen atoms combine with this many aluminum atoms
  5. 12. The general name given to a row (left-to-right) in the periodic table
  6. 15. The periodic table is normally drawn with 18 columns. One with more representation has ___ columns
  7. 16. Number of elements known in 1800
  8. 19. The group that consists of very unreactive gases
  9. 20. The modern name for ekasilicon
  10. 21. The staircase that separates metals and nonmetals begins below this element
  11. 22. Iodine belongs to this group
  12. 23. The first alkali metal
Down
  1. 1. Nonmetal that is a liquid at SATP (Standard Ambient Temperature Pressure)
  2. 2. Silicon is in this period
  3. 3. Elements that most closely follow the periodic law
  4. 4. Most elements are ___ since they fall to the left of the "staircase line"
  5. 6. The general name given to a column in the periodic table
  6. 8. The first scientist to organize elements based on repeating patterns
  7. 9. Elements were originally placed in order of atomic ___ but they are now in order of atomic ___
  8. 13. This element was assigned a relative atomic mass of one because it is the lightest element
  9. 14. Synthetic elements with atomic numbers greater than 93
  10. 17. Most nonmetals are in this state
  11. 18. Silicon is in this group