1. Ag   Argon   Silver   Silicon   Neon   Hint Half-n-half Clue   2. B   Lithium   Beryllium   Silicon   Boron   Half-n-half Clue   3. Ni   Uranium   Platinum   Nickel   Tin   Half-n-half Clue   4. Xe   Zinc   Phosphorus   Silver   Xenon   Half-n-half Clue   5. Ir   Cadmium   Phosphorus   Tungsten   Iridium   Half-n-half Clue   6. Ne   Silver   Neon   Helium   Antimony   Half-n-half Clue   7. Br   Iridium   Phosphorus   Bromine   Calcium   Half-n-half Clue