Periodic Table

12345678910111213141516171819202122
Across
  1. 6. I am a noble gas with 2 electrons.
  2. 8. an inert gas and group 18
  3. 9. I am the only element in the halide family that is a liquid.
  4. 11. I am not really an alkali metal, but since I have only 1 electron I behave like them.
  5. 15. I am a metal that is liquid at room temperature.
  6. 16. I am the head of the carbon family known as the “basis of life”.
  7. 17. I am a member of the carbon family often mistaken for the end of your pencil.
  8. 18. I am the 2nd most abundant element in the Earth’s crust and have 14 neutrons.
  9. 20. My atomic mass is 35.453.
  10. 22. I am a member of the boron family and am the most abundant metal in the Earth’s crust.
Down
  1. 1. I am a metal with 28 electrons.
  2. 2. The outer energy level or shell of any atom.
  3. 3. I am the first element in the fourth period used in making fertilizer.
  4. 4. I am a member of the nitrogen family with 16 neutrons.
  5. 5. I make up 78% of the air and am found in the 15th group.
  6. 7. the rows that identify the number of energy levels
  7. 10. I am a gas with 8 protons and 8 neutrons.
  8. 12. My atomic number is 79.
  9. 13. I have 2 electrons in the first shell, 8 in the second shell.
  10. 14. I have 26 protons.
  11. 15. I am a member of the alkaline earth metals used to make fireworks and medicines.
  12. 19. I am a silvery white metal used to make salt.
  13. 20. I have 20 neutrons and am found in your teeth and bones.
  14. 21. My atomic number is 47 and I am used to make photographic film.