Valence electrons determine how an atom of an element can bond. Each element wants 8, or an octet. Place the correct number of valence electrons beside each element listed to show how many electrons “unbonded atoms” have. *Use Group A elements only.
a. Oxygen ____
b. Calcium ____
c. Phosphorus ____
d. Argon ____
e. Chlorine ___
f. Boron ____
a. Oxygen has 6 valence electrons.
b. Calcium has 2 valence electrons.
c. Phosphorus has 5 valence electrons.
d. Argon has 8 valence electrons.
e. Chlorine has 7 valence electrons.
f. Boron has 3 valence electrons.