Periodic Table Puzzle

3. I am in group 14, period 6.
5. I am in group 18, period 2 and am using to make bright signs.
8. I have 26 protons.
9. I have 20 neutrons and am found in your teeth and bones.
12. My atomic number is 79.
13. I am a member of the halide family with an atomic number of 53.
15. I am a gas in group 17 with a mass of 19. I am the most reactive nonmetal.
19. I am in group 2, period 3 and am used to make fireworks.
20. I am in group 13, have 14 neutrons, and can be used to make foil.
23. I am an element with 6 protons that actually makes up the end of your pencil.
24. I am in group 15 and have 16 neutrons.
25. I am in group 14, period 4.
26. I have 7 electrons and make up 78% of the air.
27. I have 55 electrons and am very explosive when dropped in water.
28. I have 2 electrons in the first cloud, 8 in the second, and 6 in the third.

1. I am a noble gas that easily floats in the air, which is why I am used in balloons.
2. I am not really an alkali metal, but since I only have 1 electron I behave like them.
4. I am a transition metal with 30 electrons and am used in making paint.
6. I am a gas with 8 protons and 8 neutrons.
7. I am in group 13, period 4 and can melt in your hand.
10. I am the first element in the fourth period.
11. My atomic number is 47 and I am used to make photographic film.
14. I am the third element to the right in the Lanthanides row and make some seriously strong magnets.
16. I am a transition metal with 25 electrons.
17. I have 98 protons and am named after the state you are currently in.
18. I have 35 electrons and am a liquid at room temperature.
21. I am a silvery white metal used to make salt and have a rounded mass of 23.
22. I have a rounded atomic mass of 35.
26. I am a metal with 28 electrons.