thallium

mercury$\longleftarrow$ 81 $\longrightarrow$lead

Pronunciation

• enPR: thăl'ēəm, IPA ^(key): /ˈθæliəm/

• Audio (US)

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Noun

Singular thallium

Plural none

1. (uncountable) Thallium is a metallic (meaning made of metal) element with an atomic number of 81 and symbol Ti.