| 单词 | lithium |
| 释义 | Word Frequency lithium(ˈlɪθɪəm) noun a soft silvery element of the alkali metal series: the lightest known metal, used as an alloy hardener, as a reducing agent, and in batteries. Symbol: Li; atomic no: 3; atomic wt: 6.941; valency: 1; relative density: 0.534; melting pt: 180.6°C; boiling pt: 1342°C Word origin C19: New Latin, from litho- + -ium |
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