Oxygen (O) – 8 Read More »
Fluorine (F) – 9 Read More »
Neon (Ne) – 10 Read More »
Sodium (Na) – 11 Read More »
Magnesium (Mg) – 12 Read More »
Aluminum (Al) – 13 Read More »
Silicon (Si) – 14 Read More »
Phosphorus (P) – 15 Read More »
Sulfur (S) – 16 Read More »
Chlorine (Cl) – 17 Read More »
Argon (Ar) – 18 Read More »
Potassium (K) – 19 Read More »