1. Br   Cadmium   Fluorine   Bromine   Mercury   Hint Half-n-half Clue   2. Al   Calcium   Aluminum   Hydrogen   Fluorine   Half-n-half Clue   3. Ar   Osmium   Argon   Oxygen   Manganese   Half-n-half Clue   4. S   Sulfur   Silver   Bromine   Krypton   Half-n-half Clue   5. Ca   Calcium   Chlorine   Oxygen   Sulfur   Half-n-half Clue   6. Sb   Helium   Uranium   Antimony   Oxygen   Half-n-half Clue   7. Ne   Sulfur   Tin   Phosphorus   Neon   Half-n-half Clue