1. Na   Uranium   Helium   Sodium   Gold   Hint Half-n-half Clue   2. H   Mercury   Nickel   Iridium   Hydrogen   Half-n-half Clue   3. Li   Chlorine   Hydrogen   Mercury   Lithium   Half-n-half Clue   4. P   Manganese   Phosphorus   Potassium   Chromium   Half-n-half Clue   5. K   Argon   Aluminum   Iridium   Potassium   Half-n-half Clue   6. B   Gold   Cobalt   Magnesium   Boron   Half-n-half Clue   7. Al   Fluorine   Iodine   Chlorine   Aluminum   Half-n-half Clue