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5.3 Chemistry
Vocabulary Words
| Question | Answer |
|---|---|
| valence electron | an electron that is in the highest occupied energy level of an atom |
| alkali metals | elements in Group 1A of the periodic table, not including hydrogen |
| alkaline earth metals | elements in Group 2A of the periodic table |
| halogens | elements in Group 7A |
| noble gases | elements in Group 8A |