Periodic Table
Across
- 2. I am a noble gas that has a atomic number of 86.
- 4. I am the only element in the halide family that is a liquid.
- 8. I am a Lanthanoid metal with an atomic mass of 140.116 amu.
- 9. I am a gas with a mass number of 19.
- 10. Group one is called the ___ metal group.
- 11. Metals that do not conduct electricity or heat very well.
- 12. I am a halogen that has an atomic mass of 35.4527 amu.
- 14. Very reactive because there oxidation number is +2.
- 17. I am a metal that is liquid at room temperature.
- 19. Have properties of both metals and non-metals.
- 23. My atomic number is 33.
- 24. Group 17 is called the ___ group.
- 25. Elements is arranged in order of _______ atomic weight.
- 26. there are __ groups on the periodic table.
Down
- 1. I am a noble gas with 2 electrons.
- 3. I make up 78% of the air and am found in the 15th group.
- 5. I am a gas with 8 protons and 8 neutrons.
- 6. A group is a _______ column in the periodic table.
- 7. The term "halogen" means.
- 8. I have 20 neutrons and am found in your bones.
- 13. Group two is called the ____ earth metals.
- 15. They are the 18th group on the periodic table.
- 16. The biggest group of elements in periodic table is called the __________ metals group.
- 18. There are ___ noble gases found in group 18 on the periodic table.
- 20. My atomic number is 3.
- 21. All halogens have ___ electrons in their outer shells.
- 22. I am a transition metal with 25 electrons.
- 27. My atomic number is 79.