Hint | Answer |
Darmstadtium, Roentgenium, Copernicium, Flerovium... | |
Tantalum, Osmium, Rhenium, Tungsten... | |
Calcium, Iron, Aluminium, Silicon... | |
Barium, Rubidium, Potassium, Caesium... | |
Helium, Beryllium, Carbon, Oxygen... | |
Fluorine, Argon, Cobalt, Krypton... | |
Oxygen, Osmium, Phosphorus, Protactinium... | |
Palladium, Silver, Cadmium, Indium... | |
Lead, Lawrencium, Lanthanum, Krypton... | |
Mercury, Tellurium, Neptunium, Uranium... | |
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