History of the Periodic Table Vocab

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Across
  1. 2. The last name of the scientist who first arranged atoms into groups of eight by their atomic mass, finding that every 8th element had similar physical and chemical properties.
  2. 3. The last name of the scientist who classified elements into triads based on physical and chemical properties.
  3. 5. Dimitri Mendeleev was able to predict the _ and properties of element based on where there were "holes" in its structure.
  4. 6. States that when elements are arranged in order of increasing atomic number, there is a periodic repetition of their physical and chemical properties.
  5. 9. The d block elements are known as the _ elements.
  6. 11. The last name of the scientist who is considered the father of the modern periodic table, having ranked elements by mass (generally) but placed more emphasis on properties.
  7. 14. The number of protons is also known as the __.
  8. 15. The noble gases have eight _ electrons, making their outermost shell full and stable.
Down
  1. 1. The f block elements are known as the _ elements.
  2. 4. Horizontal rows of the periodic table that show repeating patterns and correspond to an energy level
  3. 7. The last name of the scientist who discovered that the table should be organized by the number of protons.
  4. 8. Noble gases are _ which is why they are placed at the end of the table.
  5. 10. The last name of the scientist who moved the lanthanide and actinide series beneath the table
  6. 12. The _ rule states that elements will gain, lose, or share electrons until they have a configuration like the nearest noble gas, which is most energetically stable
  7. 13. The vertical columns of the periodic table. Also called groups.