Across
- 2. metal with 28 electrons
- 3. Element that has 26 protons
- 5. horizontal rows on the periodic table
- 6. Element in Group 17 often mistaken for the end of your pencil
- 7. A transition metal with 25 electrons
- 9. Metals that are found in groups 3-12 are called _____________ metals
- 11. A gas with atomic mass of 19; (hint: look in group 17)
- 15. Only element in group 17 that is a liquid
- 17. vertical columns on the periodic table
- 18. Group 17 elements are called __________.
- 20. Chart with all known elements
- 22. Noble gas with 2 electrons
- 23. Gas with 8 protons and 8 electrons
- 24. Only element in Group 1 that is not classified as an alkali metal
- 25. Silvery white metal used to make salt;found in Group 1
Down
- 1. Types of metals found in Group 1 of the periodic table
- 4. Center of an atom
- 8. Positively charged particles found in the nucleus of an atom
- 10. neutrally charged particles found inside the nucleus of an atom
- 12. Group 18 elements are called _______.
- 13. Transition metal with 30 electrons
- 14. element that as 20 neutrons and found in teeth and bones
- 16. Element with atomic number 53
- 19. Element that is a liquid at room temperature;symbol Hg
- 21. Negatively charged particles found in the nucleus of an atom