How do how do you know the number of valence electrons in an atom from the periodic table? User: How do you know the number of valence electrons from the periodic table?

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asked Sep 16, 2017 27.9k views

1 Answer

Ferares · Answer 1 · 2017-09-23T10:40:15+0000

The valence electrons is last outer shell of an atom. So it is the last number of the electron configuration on the periodic table.