1													2
																			3
			4					5
6																	7
								8
		9											10
					11										12
											13
	14				15
																				16
										17
18
																19
						20								21
			22
													23
														24

Across 1. H 5. Group 2 element with 4 electron shells 6. Si 9. the name for phosphorus as an ion 10. The most reactive Halogen 11. Inert gas with 10 electrons in total 12. The name for Bromine as an ion 15. Electron structure 2,8,5 17. Group 1 is collectively called (2 Words) 18. The fourth most reactive group 1 element 19. NO3 21. A metal in period 3 that has a 3+ ion 22. OH 23. Atomic number 17 24. SO4

Down 1. The group 7 (17) elements 2. The outer most shell 3. Is in period 2 group 3 4. has electron structure 2,1 7. CO3 8. Has 3 electron shells with 2 valence electrons 13. The elements with full electron shells (2 Words) 14. electronic structure 2,8,8 16. The group 2 elements are called _ _ metals (2 Words) 20. A column in the periodic table is called a _