Important Elements

Element Symbol Atomic Number
Barium Ba 56
Hafnium Hf 72
Tungsten W 74
Rhenium Re 75
Osmium Os 76
Platinum Pt 78
Gold Au 79
Mercury Mg 80
Lead Pb 82
Bismuth Bi 83
Polonium Po 84
Radon Rn 86
Radium Ra 88
Actinium Ac 89
Thorium Th 90
Uranium U 92
Plutonium Pu 94
Curium Cm 96

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