Periodic Table

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Across
  1. 1. What is the name of a downward row in the periodic table?
  2. 7. What is the part of an atom which no charge called?
  3. 8. What is the name of the orbit an electron is in?
  4. 9. How many electrons can be in the second shell?
  5. 11. What is the number above an element called?
Down
  1. 2. What is the number below at atom called?
  2. 3. What is the part of an atom with a positive charge called?
  3. 4. Which element has the smallest atomic mass?
  4. 5. Who created the periodic table?
  5. 6. What is the part of an atom with a negative charge called?
  6. 10. How many electrons can be in the first shell?