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Can someone help me out with these questions?
18. What are valence electrons? How can you tell the number of valence electrons an atom
has?
19. What is an ion?
20. How many types of ions are known?
21. What do all metals do with their valence electrons? What kind of ions do metals form?
22. What do all non-metals do with their valence electrons? What kind of ions do non-
metals form?
