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thal·li·um AHD[thălʹē-əm] D.J.[ˈθæliːəm]K.K.[ˈθæliəm]n.Symbol Tl （名词）符号 Tl - A soft, malleable, highly toxic metallic element, used in photocells, infrared detectors, low-melting glass, and formerly in rodent and ant poisons. Atomic number 81; atomic weight 204.37; melting point 303.5°C; boiling point 1,457°C; specific gravity 11.85; valence 1, 3. See table at element 铊：柔轻的可延展的剧毒金属元素，用于光电池、红外检测器、低熔玻璃，从前用于田鼠和蚂蚁的毒药。原子序数81；原子量204.37；熔点303.5°C；沸点1,457°C；比重11.85；化合价1或3 参见 element
- thall(o)- [from its green spectral line] thall(o)- [来自它的绿色光谱线]
- -ium -ium
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