1. Ag   Calcium   Silver   Iridium   Xenon   Hint Half-n-half Clue   2. W   Iodine   Tungsten   Boron   Iron   Half-n-half Clue   3. Os   Osmium   Silicon   Gold   Antimony   Half-n-half Clue   4. Li   Tungsten   Lithium   Cobalt   Chlorine   Half-n-half Clue   5. Zn   Manganese   Gold   Lithium   Zinc   Half-n-half Clue   6. Ir   Iridium   Tungsten   Calcium   Lead   Half-n-half Clue   7. Si   Mercury   Sulfur   Fluorine   Silicon   Half-n-half Clue