fr


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Fr,

symbol for the element franciumfrancium
[from France], radioactive chemical element; symbol Fr; at. no. 87; mass no. of most stable isotope 223; m.p. about 27°C; (estimated); b.p. 677°C; (estimated); sp. gr. unknown; valence +1.
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Fr

(chemistry)
(electricity)

fr

(networking)
The country code for France.