Relier Pairs Periodic Elements Quiz (D)Version en ligne Match theelement with the symbol and number par Meg-Everett Hann 1 Na 2 Atomic number 13 3 Neon 4 5 Hydrogen 6 Helium 7 Silicon 8 9 Atomic number 5 10 Sulfur 11 Carbon 12 Oxygen 13 Potassium 14 Chlorine Atomic Number 17 15 Mg 16 17 Argon 18 19 Symbol= N 20 Lithium Atomic Number 8 Magnesium Number 7 Sodium Berylium Phosphorus Atomic Number 10 Boron Atomic Number 2 Fluorine Calcium