How many valance electrons do boron have?

Answer 1

Boron's atomic number is 5. Thus, its electron configuration is 1s2 2s2 2p1. If you add up the number of electrons in the "2" shell, which is boron's valence shell, you get 2 + 1 = 3 valence electrons.

Answer 2

Boron has 3 valence electrons.