Periodic Table Crossword Challenge

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Across
  1. 2. My family is made up of gases. We are royal. We are in group 18.
  2. 5. My atomic number is 79 and I make bling bling happen.
  3. 7. ________ have a negative charge.
  4. 8. The Atomic number ________ from left to right across a period.
  5. 10. I'm between Strontium and Zirconium on the periodic table. HINT: My name starts with a “Y.”
  6. 11. I'm the only element with a 3 letter name. Also, I'm used to make cans.
  7. 13. There are ________ groups on the periodic table. (spell out the number)
  8. 15. These are found outside of the nucleus in the orbitals.
  9. 18. I'm very bright and I have 10 electrons.
  10. 19. I am a gas with 8 protons. You breath me to live!
  11. 21. Protons have a ________ charge.
  12. 22. The atomic _______ equals the number of protons and electrons found in an element
Down
  1. 1. I am a table of the chemical elements arranged in order of atomic number.
  2. 3. I am the first element in the fourth period and am found in bananas.
  3. 4. I am a gas with a mass number of 18.9984032 and am found in toothpaste.
  4. 6. The atomic mass increases from left to ______ across a period.
  5. 9. I am a silvery white metal used to make salt. My symbol is Na.
  6. 12. There are ________ periods on the periodic table. (periods of elements occur naturally on Earth)
  7. 14. The Atomic number increases from top to bottom down a ___________.
  8. 16. My atomic mass is 35.453 and I help keep swimming pools clean.
  9. 17. _______ have a neutral charge.
  10. 20. I am a metal with 28 electrons. I'm also worth 5 cents.