1. Zn   Zinc   Gold   Xenon   Krypton   Hint Half-n-half Clue   2. B   Cobalt   Iron   Boron   Bromine   Half-n-half Clue   3. I   Carbon   Nickel   Iodine   Hydrogen   Half-n-half Clue   4. Li   Lead   Calcium   Lithium   Krypton   Half-n-half Clue   5. S   Iron   Sulfur   Nitrogen   Silver   Half-n-half Clue   6. Cu   Sodium   Copper   Helium   Argon   Half-n-half Clue   7. Xe   Lead   Xenon   Iodine   Gold   Half-n-half Clue