1								2
						3													4
				5							6
		7
									8
		9																				10
									11
				12												13
														14
							15
																					16
						17							18
	19		20														21								22
											23									24			25
	26
										27
28				29															30
						31	32
						33

Across 1. Alkaline earth metal with a nuclear charge of +12 5. Element with 3 valence electrons that does not have an octet during bonding 6. Educated guess 8. Francium would have chemical properties similar to elements of this family 9. Number of valence electrons that second energy level (ring) of atom can hold 10. Atoms that have the same number of protons but a different number of electrons 12. Element with 26 neutrons and 23 electrons 13. Element in period 4 with 3 valence electrons 15. Element in alkaline earth family that has the smallest atomic radius 18. Element in period 3 with a negative 3 charge 20. Chlorine is a member of this family 24. Noble gas that does not have 8 valence electrons 26. Scientist that discovered electron and came up with plum pudding model of atom 27. Most electronegative element in periodic table 28. Atom that has gained an electron to become an ion 30. Element in period 5 with the largest ionization energy 31. Subatomic particle that identifies an element 33. The least reactive transition metal

Down 2. Element that could have an isotope with atomic number 12 and a mass of 26 amu 3. Element in period 4 with the most neutrons 4. Laboratory technique that can be used to get drinking water from salt water 7. Number of valence electrons alkaline metals have 11. Element in period 2 that has a negative 3 charge as an ion 14. Scientist that determined there was a positively charged nucleus 16. Where all of the mass of an atom is located 17. Atoms that have the same number of protons but a different number of neutrons 19. All metals form this type of ion when they lose electrons 21. Semimetal with 5 valence electrons 22. Majority of the atom is _______ space 23. Semimetal that has 4 valence electrons and is used to make glass 25. Element in period 5 with the largest ionic radius 29. Element with the lowest electronegativity in period 3 32. Noble gas with the largest atomic size