New to Sophia?
-Identify the number of valence electrons an element easily.
Idea for Video: Katie Smith
In this packet you'll learn how to identify how many valence electrons an atom has in an instant!
Sophia college courses cost up to 80% less than traditional courses*. Start a free trial now.
It's easy! Just count the number of electrons in the outermost electron shell!
Be: 2 valence electrons.
Al: 3 valence electrons.
Si: 4 valence electrons.
O: 6 valence electrons.