HG
\ˌe͡ɪt͡ʃd͡ʒˈiː], \ˌeɪtʃdʒˈiː], \ˌeɪ_tʃ_dʒ_ˈiː]\
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a heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures
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100 grams
By Princeton University