Lithium (Li), element 3 – Learn Acer periodic table

Alkali metal, atomic number 3.

Lithium (from Greek:λίθος lithos, "stone") is a chemical element with the symbol Li and atomic number 3. It is a soft, silver-white metal belonging to the alkali metal group of chemical elements. Under standard conditions it is the lightest metal and the least dense solid element.

Symbol Li. Atomic mass 6.94 u. Group 1, period 2. Electron configuration [He] 2s1. Electrons per shell 2, 1. State at room temperature: Solid. Melting point 180.5 °C, boiling point 1329.8 °C. Discovered by Johan August Arfwedson.

Element data from Wikipedia, CC BY-SA 3.0.

Lithium (Li), element 3 – Learn Acer periodic table

Lithium

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