Related Clues:
- Copper or chromium
- Gold or iron
- Titanium or tin
- Airport detector activator
- Water, perhaps, that's in a kettle
- Something found on a chemist's table
- Lithium or iridium
- Silver or platinum, e.g
- Any of the transition elements
- Einsteinium, for one
- Osmium or rhodium
- Genre featured on MTV's 'Headbangers Ball'
- Oxygen, e.g
- Iron, e.g
- Palladium, say, not empty after melee going out