Bismuth	Isotopic Abundances	Rare Earth Element
Congener	Isotopic Dilution	Representative Element
Diatomic Element	Lanthanide	Siderophile
Element	Noble Gas	Silicon
Gadolinium	Noble Metal	Tetratomic Element
Gallium	Oxygen	Transition Element
Graphite	Ozone	Transuranium Element
Halogen	Periodic Properties	Tritium
Hydrogen	Periodic Table
Iron	Promethium