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19-12-2018
Chemistry

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how many valence electrons does 1s2 2s2 2p5

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floresvanexel4pejp1p floresvanexel4pejp1p

19-12-2018

seven valence electrons

All other elements in this family, Li, Na, K, Rb, and Cs, also have only one valence electron. On the other hand, fluorine has seven valence electrons, as shown by its configuration 1s2 2s2 2p5.

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